2a-10(-9-a)=

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Solution for 2a-10(-9-a)= equation:


Simplifying
2a + -10(-9 + -1a) = 0
2a + (-9 * -10 + -1a * -10) = 0
2a + (90 + 10a) = 0

Reorder the terms:
90 + 2a + 10a = 0

Combine like terms: 2a + 10a = 12a
90 + 12a = 0

Solving
90 + 12a = 0

Solving for variable 'a'.

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

Add '-90' to each side of the equation.
90 + -90 + 12a = 0 + -90

Combine like terms: 90 + -90 = 0
0 + 12a = 0 + -90
12a = 0 + -90

Combine like terms: 0 + -90 = -90
12a = -90

Divide each side by '12'.
a = -7.5

Simplifying
a = -7.5

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