y-7+2(y-1)=12

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Solution for y-7+2(y-1)=12 equation:


Simplifying
y + -7 + 2(y + -1) = 12

Reorder the terms:
y + -7 + 2(-1 + y) = 12
y + -7 + (-1 * 2 + y * 2) = 12
y + -7 + (-2 + 2y) = 12

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

Combine like terms: -7 + -2 = -9
-9 + y + 2y = 12

Combine like terms: y + 2y = 3y
-9 + 3y = 12

Solving
-9 + 3y = 12

Solving for variable 'y'.

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

Add '9' to each side of the equation.
-9 + 9 + 3y = 12 + 9

Combine like terms: -9 + 9 = 0
0 + 3y = 12 + 9
3y = 12 + 9

Combine like terms: 12 + 9 = 21
3y = 21

Divide each side by '3'.
y = 7

Simplifying
y = 7

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