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3 years ago

12

Need help with #16 please

1 answer:

inna [77]3 years ago

6 0

multiply the 1st by -3 then

-3x = 2y - 5

3x-y=5

0+y=5

y=5

to find x substitute y in to the first eqn

x=2×5-5

x=5

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