(3+4y)=-21

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


Simplifying
(3 + 4y) = -21

Remove parenthesis around (3 + 4y)
3 + 4y = -21

Solving
3 + 4y = -21

Solving for variable 'y'.

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

Add '-3' to each side of the equation.
3 + -3 + 4y = -21 + -3

Combine like terms: 3 + -3 = 0
0 + 4y = -21 + -3
4y = -21 + -3

Combine like terms: -21 + -3 = -24
4y = -24

Divide each side by '4'.
y = -6

Simplifying
y = -6

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