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avanturin [10]
3 years ago
13

PLEASE CAN SOMEONE HELP!!!????

Mathematics
1 answer:
ozzi3 years ago
5 0
Add them 2 equations to eliminate x's

-2x-y=9
<u>2x-9y=1 +</u>
0x-10y=10

-10y=10
divide by -10
y=-1

sub back

-2x-y=9
-2x-(-1)=9
-2x+1=9
-2x=8
divide by -2
x=-4

y=-1

(x,y)
(-4,-1)


A
<u>
</u>
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