-7y+8y+7=-9+4

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Solution for -7y+8y+7=-9+4 equation:


Simplifying
-7y + 8y + 7 = -9 + 4

Reorder the terms:
7 + -7y + 8y = -9 + 4

Combine like terms: -7y + 8y = 1y
7 + 1y = -9 + 4

Combine like terms: -9 + 4 = -5
7 + 1y = -5

Solving
7 + 1y = -5

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-7' to each side of the equation.
7 + -7 + 1y = -5 + -7

Combine like terms: 7 + -7 = 0
0 + 1y = -5 + -7
1y = -5 + -7

Combine like terms: -5 + -7 = -12
1y = -12

Divide each side by '1'.
y = -12

Simplifying
y = -12

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