-9(21)-7y=63

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Solution for -9(21)-7y=63 equation: 


Simplifying
-9(21) + -7y = 63

Multiply -9 * 21
-189 + -7y = 63

Solving
-189 + -7y = 63

Solving for variable 'y'.

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

Add '189' to each side of the equation.
-189 + 189 + -7y = 63 + 189

Combine like terms: -189 + 189 = 0
0 + -7y = 63 + 189
-7y = 63 + 189

Combine like terms: 63 + 189 = 252
-7y = 252

Divide each side by '-7'.
y = -36

Simplifying
y = -36

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