12y-(21-y)=2y

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Solution for 12y-(21-y)=2y equation:


Simplifying
12y + -1(21 + -1y) = 2y
12y + (21 * -1 + -1y * -1) = 2y
12y + (-21 + 1y) = 2y

Reorder the terms:
-21 + 12y + 1y = 2y

Combine like terms: 12y + 1y = 13y
-21 + 13y = 2y

Solving
-21 + 13y = 2y

Solving for variable 'y'.

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

Add '-2y' to each side of the equation.
-21 + 13y + -2y = 2y + -2y

Combine like terms: 13y + -2y = 11y
-21 + 11y = 2y + -2y

Combine like terms: 2y + -2y = 0
-21 + 11y = 0

Add '21' to each side of the equation.
-21 + 21 + 11y = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 11y = 0 + 21
11y = 0 + 21

Combine like terms: 0 + 21 = 21
11y = 21

Divide each side by '11'.
y = 1.909090909

Simplifying
y = 1.909090909

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