7y-15=-21

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Solution for 7y-15=-21 equation: 


Simplifying
7y + -15 = -21

Reorder the terms:
-15 + 7y = -21

Solving
-15 + 7y = -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 + 7y = -21 + 15

Combine like terms: -15 + 15 = 0
0 + 7y = -21 + 15
7y = -21 + 15

Combine like terms: -21 + 15 = -6
7y = -6

Divide each side by '7'.
y = -0.8571428571

Simplifying
y = -0.8571428571

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