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Q: What does y equal if Y plus 12 equals 2y plus 77?

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4y+4 = 2y+12 4y-2y = 12-4 2y = 8 y = 4

4

y=4

If 3y = 12, 2y = 8

-2

Both of them are equations!The solution is (x, y) = (2, 1).

X + ( 2Y - 2X - Y ) is equal to Y - X

what is the slope of the line that has the equation 4x+2y=12?

4

2x+y=-12-4x-2y=30 x=-y/2+30, you plug this into -12-4x-2y=30 and get -12+2y-120-2y=30 which gives 2y-2y=162. This is not possible, so the equation is unsolvable.

Y= 1/4.

No. They are parallel.