Solving equations with one unknown | 8th grade | Math

Learn how to solve more complicated, multi-step equations like 4x + 5 = 6x -7. Ifyou'reseeingthismessage,itmeanswe'rehavingtroubleloadingexternalresourcesonourwebsite. Ifyou'rebehindawebfilter,pleasemakesurethatthedomains*.kastatic.organd*.kasandbox.orgareunblocked. CoursesMath:Pre-K-8thgradePre-Kthroughgrade2(KhanKids)Earlymathreview2ndgrade3rdgrade4thgrade5thgrade6thgrade7thgrade8thgradeSeePre-K-8thgradeMathMath:GetreadycoursesGetreadyfor3rdgradeGetreadyfor4thgradeGetreadyfor5thgradeGetreadyfor6thgradeGetreadyfor7thgradeGetreadyfor8thgradeGetreadyforAlgebra1GetreadyforGeometryGetreadyforAlgebra2GetreadyforPrecalculusGetreadyforAP®CalculusGetreadyforAP®StatisticsMath:highschool&collegeAlgebra1GeometryAlgebra2TrigonometryPrecalculusHighschoolstatisticsStatistics&probabilityCollegealgebraNEWAP®︎/CollegeCalculusABAP®︎/CollegeCalculusBCAP®︎/CollegeStatisticsMultivariablecalculusDifferentialequationsLinearalgebraSeeallMathTestprepSATLSATPraxisCoreMCATScienceMiddleschoolbiology-NGSSNEWMiddleschoolEarthandspacescience-NGSSNEWMiddleschoolphysics-NGSSNEWHighschoolbiologyHighschoolbiology-NGSSHighschoolphysicsHighschoolphysics-NGSSAP®︎/CollegeBiologyAP®︎/CollegeChemistryAP®︎/CollegeEnvironmentalScienceAP®︎/CollegePhysics1SeeallScienceComputingComputerprogrammingAP®︎/CollegeComputerSciencePrinciplesSeeallComputingArts&humanitiesUShistoryAP®︎/CollegeUSHistoryUSgovernmentandcivicsAP®︎/CollegeUSGovernment&PoliticsWorldHistoryProject-OriginstothePresentWorldHistoryProject-1750tothePresentArthistoryAP®︎/CollegeArtHistorySeeallArts&HumanitiesEconomicsMacroeconomicsAP®︎/CollegeMacroeconomicsMicroeconomicsAP®︎/CollegeMicroeconomicsSeeallEconomicsReading&languageartsUpto2ndgrade(KhanKids)2ndgrade3rdgrade4thgrade5thgrade6thgrade7thgrade8thgrade9thgradeGrammarSeeallReading&LanguageArtsLifeskillsSocial&emotionallearning(KhanKids)CareersPersonalfinanceGrowthmindsetInternetsafetyNEWSeeallLifeSkillsSearchDonateLoginSignupSearchforcourses,skills,andvideosMaincontent8thgradeUnit:Solvingequationswithoneunknown8thgradeUnit:SolvingequationswithoneunknownNotfeelingreadyforthis?CheckoutGetreadyfor8thgrade.0Legend(Opensamodal)PossiblemasterypointsSkillSummaryLegend(Opensamodal)EquationswithvariablesonbothsidesLearnIntrotoequationswithvariablesonbothsides(Opensamodal)Equationswithvariablesonbothsides:20-7x=6x-6(Opensamodal)Equationwithvariablesonbothsides:fractions(Opensamodal)Equationwiththevariableinthedenominator(Opensamodal)PracticeEquationswithvariablesonbothsidesGet3of4questionstolevelup!Equationswithvariablesonbothsides:decimals&fractionsGet3of4questionstolevelup!EquationswithparenthesesLearnEquationswithparentheses(Opensamodal)Multi-stepequationsreview(Opensamodal)PracticeEquationswithparenthesesGet3of4questionstolevelup!Equationswithparentheses:decimals&fractionsGet3of4questionstolevelup!Quiz1Levelupontheaboveskillsandcollectupto320MasterypointsStartquizNumberofsolutionstoequationsLearnNumberofsolutionstoequations(Opensamodal)Workedexample:numberofsolutionstoequations(Opensamodal)Creatinganequationwithnosolutions(Opensamodal)Creatinganequationwithinfinitelymanysolutions(Opensamodal)PracticeNumberofsolutionstoequationsGet3of4questionstolevelup!NumberofsolutionstoequationschallengeGet3of4questionstolevelup!EquationswordproblemsLearnSumsofconsecutiveintegers(Opensamodal)Sumofintegerschallenge(Opensamodal)PracticeSumsofconsecutiveintegersGet3of4questionstolevelup!Quiz2Levelupontheaboveskillsandcollectupto240MasterypointsStartquizUpnextforyou:UnittestLeveluponalltheskillsinthisunitandcollectupto700Masterypoints!StartUnittestAboutthisunitLearnhowtosolvemorecomplicated,multi-stepequationslike4x+5=6x-7.