9-4=y-7

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Solution for 9-4=y-7 equation:


Simplifying
9 + -4 = y + -7

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

Reorder the terms:
5 = -7 + y

Solving
5 = -7 + y

Solving for variable 'y'.

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

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

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

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

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

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

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

Simplifying
y = 12

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