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vfiekz [6]
3 years ago
14

Whats the order pair of x,y for x-2y=-12 x 6y=20?

Mathematics
1 answer:
mote1985 [20]3 years ago
4 0
X-2y=-12
x+6y=20
we can cancel x's
multiply first equation by -1 and add to 2nd equation

-x+2y=12
<u>x+6y=20 +</u>
0x+8y=32

8y=32
divide both sides by 8
y=4

sub back

x-2y=-12
x-2(4)=-12
x-8=-12
add 12 both sides
x=-4


(x,y)
(-4,4)
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