2(-21-7)=9y

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Solution for 2(-21-7)=9y equation:


Simplifying
2(-21 + -7) = 9y

Combine like terms: -21 + -7 = -28
2(-28) = 9y

Multiply 2 * -28
-56 = 9y

Solving
-56 = 9y

Solving for variable 'y'.

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

Add '-9y' to each side of the equation.
-56 + -9y = 9y + -9y

Combine like terms: 9y + -9y = 0
-56 + -9y = 0

Add '56' to each side of the equation.
-56 + 56 + -9y = 0 + 56

Combine like terms: -56 + 56 = 0
0 + -9y = 0 + 56
-9y = 0 + 56

Combine like terms: 0 + 56 = 56
-9y = 56

Divide each side by '-9'.
y = -6.222222222

Simplifying
y = -6.222222222

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