mimi0524 mimi0524

19-11-2014
Mathematics

Answered

Solving systems by substitution :

y=5x-10

y=3x+8

I dont underatand how to solve it

Verified Answer :

19-11-2014

-2 i think all you have to do is 5x divided each side 5x divide by 10=- 2

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VivianW VivianW

19-11-2014

Because they both equal 'y' you can make them equal to each other.
5x-10=3x+8
-Add 10 on both sides-
5x=3x+8+10
-Minus 3x on both sides-
5x-3x=18
2x=18
-Divide by 2-
x=9

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