4-2y-7=12

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Solution for 4-2y-7=12 equation: 


Simplifying
4 + -2y + -7 = 12

Reorder the terms:
4 + -7 + -2y = 12

Combine like terms: 4 + -7 = -3
-3 + -2y = 12

Solving
-3 + -2y = 12

Solving for variable 'y'.

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

Add '3' to each side of the equation.
-3 + 3 + -2y = 12 + 3

Combine like terms: -3 + 3 = 0
0 + -2y = 12 + 3
-2y = 12 + 3

Combine like terms: 12 + 3 = 15
-2y = 15

Divide each side by '-2'.
y = -7.5

Simplifying
y = -7.5

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