4 years ago

X+3y=-5 4x-y=6 solve by elimination please

1 answer:

const2013 [10]4 years ago

4 0

Multiply the second equation by 3, so 4x-y=6 becomes 12x-3y=18.

x + 3y = -5
+ (12x-3y = 18)
______________
13x = 13

So x = 1

Plug x = 1 into any of these, such as 1 + 3y = -5, which becomes 3y = -6, and then y = -2.
x = 1
y = -2

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