mikkywillly mikkywillly

15-04-2016
Mathematics

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What is the value of y in the solution to the following system of equations?

2x + y = −4
5x + 3y = −6

Answer for Blank 1:

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DeannaJ DeannaJ

15-04-2016

2x+ y = -4 5x + 3y = -6
y= -4 -2x

substitute y=-4-2x into 5x+3y=-6
5x + 3(-4-2x) = -6
5x -12 -6x =-6
-x=6
x=-6

sub x=-6 into 2x+y=-4
-12 + y = -4
y=8

x=-6 and y=8

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