3y-21=-28+2y

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Solution for 3y-21=-28+2y equation:


Simplifying
3y + -21 = -28 + 2y

Reorder the terms:
-21 + 3y = -28 + 2y

Solving
-21 + 3y = -28 + 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 + 3y + -2y = -28 + 2y + -2y

Combine like terms: 3y + -2y = 1y
-21 + 1y = -28 + 2y + -2y

Combine like terms: 2y + -2y = 0
-21 + 1y = -28 + 0
-21 + 1y = -28

Add '21' to each side of the equation.
-21 + 21 + 1y = -28 + 21

Combine like terms: -21 + 21 = 0
0 + 1y = -28 + 21
1y = -28 + 21

Combine like terms: -28 + 21 = -7
1y = -7

Divide each side by '1'.
y = -7

Simplifying
y = -7

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