4(y+1)-3=21

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Solution for 4(y+1)-3=21 equation: 


Simplifying
4(y + 1) + -3 = 21

Reorder the terms:
4(1 + y) + -3 = 21
(1 * 4 + y * 4) + -3 = 21
(4 + 4y) + -3 = 21

Reorder the terms:
4 + -3 + 4y = 21

Combine like terms: 4 + -3 = 1
1 + 4y = 21

Solving
1 + 4y = 21

Solving for variable 'y'.

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

Add '-1' to each side of the equation.
1 + -1 + 4y = 21 + -1

Combine like terms: 1 + -1 = 0
0 + 4y = 21 + -1
4y = 21 + -1

Combine like terms: 21 + -1 = 20
4y = 20

Divide each side by '4'.
y = 5

Simplifying
y = 5

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