silverwinter17 silverwinter17

31-03-2017
Mathematics

contestada

substitute

5x+3y=7

x=3y-13

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kmp1127 kmp1127

31-03-2017

5x+3y=7
-x +3y=13

5x+3y=7
x -3y = -13

6x = -6
x= -1

Then plug in x to find y.

5x+3y=7
5(-1)+3y=7
-5 +3y=7
3y=12
y=4

Good luck hope this helps :)

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