5-2(y+1)=-y+21

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Solution for 5-2(y+1)=-y+21 equation: 


Simplifying
5 + -2(y + 1) = -1y + 21

Reorder the terms:
5 + -2(1 + y) = -1y + 21
5 + (1 * -2 + y * -2) = -1y + 21
5 + (-2 + -2y) = -1y + 21

Combine like terms: 5 + -2 = 3
3 + -2y = -1y + 21

Reorder the terms:
3 + -2y = 21 + -1y

Solving
3 + -2y = 21 + -1y

Solving for variable 'y'.

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

Add 'y' to each side of the equation.
3 + -2y + y = 21 + -1y + y

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

Combine like terms: -1y + y = 0
3 + -1y = 21 + 0
3 + -1y = 21

Add '-3' to each side of the equation.
3 + -3 + -1y = 21 + -3

Combine like terms: 3 + -3 = 0
0 + -1y = 21 + -3
-1y = 21 + -3

Combine like terms: 21 + -3 = 18
-1y = 18

Divide each side by '-1'.
y = -18

Simplifying
y = -18

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