12=7-4y

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Solution for 12=7-4y equation:


Simplifying
12 = 7 + -4y

Solving
12 = 7 + -4y

Solving for variable 'y'.

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

Add '4y' to each side of the equation.
12 + 4y = 7 + -4y + 4y

Combine like terms: -4y + 4y = 0
12 + 4y = 7 + 0
12 + 4y = 7

Add '-12' to each side of the equation.
12 + -12 + 4y = 7 + -12

Combine like terms: 12 + -12 = 0
0 + 4y = 7 + -12
4y = 7 + -12

Combine like terms: 7 + -12 = -5
4y = -5

Divide each side by '4'.
y = -1.25

Simplifying
y = -1.25

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