# SOLUTION: can you tell me how to solve this problum using the multiplication principle. and how do I preform a check -1/8x=-9/10 and get x to = something I just dont understand this at all.

Algebra ->  Algebra  -> Graphs -> SOLUTION: can you tell me how to solve this problum using the multiplication principle. and how do I preform a check -1/8x=-9/10 and get x to = something I just dont understand this at all.      Log On

 Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations! Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

 Algebra: Graphs, graphing equations and inequalities Solvers Lessons Answers archive Quiz In Depth

 Question 415639: can you tell me how to solve this problum using the multiplication principle. and how do I preform a check -1/8x=-9/10 and get x to = something I just dont understand this at all.Found 2 solutions by mananth, sheldonxu:Answer by mananth(12270)   (Show Source): You can put this solution on YOUR website!-1/8x=-9/10 here we have to make x the subject: meaning that x should be on one side and the constants on the other side. if you mulyiply the equation by 8 we get -x= (-9*4)/5 -x= -36/5 /-1 x= 36/5 CHECK Answer by sheldonxu(4)   (Show Source): You can put this solution on YOUR website!You can solve this by dividing -1/8 to each side of the equation: x= (-9/10) / (-1/8 ) divide -1/8 to each side of the equation to make the coefficient of X become 1. x= 36/5 when you divide a fraction, you actually multiply the reciprocal of the fraction. That is, (-9/10 )/(-1/8)=(-9/10)*(-8/1)=72/10=36/5.