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25-10-2016
Mathematics

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HELP ME PLZ!!!!!!!!
Find the solution of this system of equations.

5x - 6y = -90 and

-10x - 6y = -90

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25-10-2016

set equal to each other since both equal 90

5x-6y=-10x-6y
add 6y to both sides
5x=-10x
x=0

5(0)-6y=-90
-6y=90
divide by -6
y=-15

(x,y)
(0,-15)

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