Solve by elimination 5x-y=12 3x+2y=2

Mathematics

2 answers:

Ber [7]2 years ago

7 0

(2)5x-y=12
3x+2y=2
10x-2y=12
3x+2y=2
13x=2
x=0.15

Ket [755]2 years ago

7 0

Eliminate y
time first equation by 2 an add them together

10x-2y=24
<u>3x+2y=2 +</u>
13x+0y=26

13x=26
divide both sides by 13
x=2

sub back

3x+2y=2
3(2)+2y=2
6+2y=2
minus 6
2y=-4
divide 2
y=-2

(x,y)
(2,-2)

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