9(-10-9a)=3-12(3a-11)

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Solution for 9(-10-9a)=3-12(3a-11) equation:


Simplifying
9(-10 + -9a) = 3 + -12(3a + -11)
(-10 * 9 + -9a * 9) = 3 + -12(3a + -11)
(-90 + -81a) = 3 + -12(3a + -11)

Reorder the terms:
-90 + -81a = 3 + -12(-11 + 3a)
-90 + -81a = 3 + (-11 * -12 + 3a * -12)
-90 + -81a = 3 + (132 + -36a)

Combine like terms: 3 + 132 = 135
-90 + -81a = 135 + -36a

Solving
-90 + -81a = 135 + -36a

Solving for variable 'a'.

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

Add '36a' to each side of the equation.
-90 + -81a + 36a = 135 + -36a + 36a

Combine like terms: -81a + 36a = -45a
-90 + -45a = 135 + -36a + 36a

Combine like terms: -36a + 36a = 0
-90 + -45a = 135 + 0
-90 + -45a = 135

Add '90' to each side of the equation.
-90 + 90 + -45a = 135 + 90

Combine like terms: -90 + 90 = 0
0 + -45a = 135 + 90
-45a = 135 + 90

Combine like terms: 135 + 90 = 225
-45a = 225

Divide each side by '-45'.
a = -5

Simplifying
a = -5

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