4(y+3)-9=-21

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Solution for 4(y+3)-9=-21 equation:


Simplifying
4(y + 3) + -9 = -21

Reorder the terms:
4(3 + y) + -9 = -21
(3 * 4 + y * 4) + -9 = -21
(12 + 4y) + -9 = -21

Reorder the terms:
12 + -9 + 4y = -21

Combine like terms: 12 + -9 = 3
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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