3[6-(y+21)]=

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Solution for 3[6-(y+21)]= equation:


Simplifying
3[6 + -1(y + 21)] = 0

Reorder the terms:
3[6 + -1(21 + y)] = 0
3[6 + (21 * -1 + y * -1)] = 0
3[6 + (-21 + -1y)] = 0

Combine like terms: 6 + -21 = -15
3[-15 + -1y] = 0
[-15 * 3 + -1y * 3] = 0
[-45 + -3y] = 0

Solving
-45 + -3y = 0

Solving for variable 'y'.

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

Add '45' to each side of the equation.
-45 + 45 + -3y = 0 + 45

Combine like terms: -45 + 45 = 0
0 + -3y = 0 + 45
-3y = 0 + 45

Combine like terms: 0 + 45 = 45
-3y = 45

Divide each side by '-3'.
y = -15

Simplifying
y = -15

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