Solving Systems of Equation Word Problems Review | Expressions & Equations | Grade 8

#MathIsSimple #Grade8 #WordProblems #Algebra
Solving Systems of Equation Word Problems Review | Expressions & Equations | Grade 8
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[@user-nm2si9up8e]

Hi thanks for the video. At 11:06, why do we multiply by -10?

[@mathissimple2]

The bottom row is 10b. To cancel the 10b, you will multiply -10(b) to get a -10b + 10b to cancel out. This prepares you to solve for C.

[@user-nm2si9up8e]

@@mathissimple2 Got it, thanks so much!

[@kfjfkeofitorhf9520]

2y===25X==80
2y===5X===16