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3x+13y=-111 6x+15y=-123 solve the following system of equations using any method
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4 votes
3x+13y=-111 6x+15y=-123 solve the following system of equations using any method

User Enrique Fueyo
by
7.8k points

1 Answer

4 votes
Multiply the first equation by two to get:

6x + 26y = -222

Subtract the equations from one another:

6x + 26y = -222
Subtract 6x + 15y = -123

This gives you:

11y = -99
So y = -9

Sub y = -9 into

3x + 13(-9) = -111
3x - 117 = -111
3x = 6
X = 2
User Skoky
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8.4k points
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