3(y-5)=-21

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Solution for 3(y-5)=-21 equation: 


Simplifying
3(y + -5) = -21

Reorder the terms:
3(-5 + y) = -21
(-5 * 3 + y * 3) = -21
(-15 + 3y) = -21

Solving
-15 + 3y = -21

Solving for variable 'y'.

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

Add '15' to each side of the equation.
-15 + 15 + 3y = -21 + 15

Combine like terms: -15 + 15 = 0
0 + 3y = -21 + 15
3y = -21 + 15

Combine like terms: -21 + 15 = -6
3y = -6

Divide each side by '3'.
y = -2

Simplifying
y = -2

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