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

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asked Aug 11, 2018 178k views

1 Answer

Trevor Eyre · Answer 1 · 2018-08-17T02:38:57+0000

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

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

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