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3 years ago

???????????!!!!!!!! Please

Mathematics

1 answer:

Vadim26 [7]3 years ago

5 0

Hello from MrBillDoesMath!

Answer:

x = -11, y = 6

Discussion:

I don't understand the answer shown -- "Doesn't Exist" -- especially as part of the problem statement is not displayed, BUT

-6x + 3y = 84 => divide both sides by 3

-2x + y = 84/3= 28

-2x + y = 28 (A)

Multiply X = -23 + 2Y by 2 to get

2x = - 46 + 4y (B)

Adding (A) and (B) gives

(-2x + y ) + (2x) = 28 + (-46 + 4y) =>

y = 28 -46 + 4y => as -2x + 2x = 0

y = -18 + 4y =>

18 = 3y =>

y = 6

From (A) -2x + (6) = 28 or -2x = 28 -6 = 22 so x = -11

Thank you,

MrB

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