8y-(X+9)=90

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Solution for 8y-(X+9)=90 equation:


Simplifying
8y + -1(X + 9) = 90

Reorder the terms:
8y + -1(9 + X) = 90
8y + (9 * -1 + X * -1) = 90
8y + (-9 + -1X) = 90

Reorder the terms:
-9 + -1X + 8y = 90

Solving
-9 + -1X + 8y = 90

Solving for variable 'X'.

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

Add '9' to each side of the equation.
-9 + -1X + 9 + 8y = 90 + 9

Reorder the terms:
-9 + 9 + -1X + 8y = 90 + 9

Combine like terms: -9 + 9 = 0
0 + -1X + 8y = 90 + 9
-1X + 8y = 90 + 9

Combine like terms: 90 + 9 = 99
-1X + 8y = 99

Add '-8y' to each side of the equation.
-1X + 8y + -8y = 99 + -8y

Combine like terms: 8y + -8y = 0
-1X + 0 = 99 + -8y
-1X = 99 + -8y

Divide each side by '-1'.
X = -99 + 8y

Simplifying
X = -99 + 8y

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