A-2(a-30)=9

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Solution for A-2(a-30)=9 equation:


Simplifying
A + -2(a + -30) = 9

Reorder the terms:
A + -2(-30 + a) = 9
A + (-30 * -2 + a * -2) = 9
A + (60 + -2a) = 9

Reorder the terms:
60 + A + -2a = 9

Solving
60 + A + -2a = 9

Solving for variable 'A'.

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

Add '-60' to each side of the equation.
60 + A + -60 + -2a = 9 + -60

Reorder the terms:
60 + -60 + A + -2a = 9 + -60

Combine like terms: 60 + -60 = 0
0 + A + -2a = 9 + -60
A + -2a = 9 + -60

Combine like terms: 9 + -60 = -51
A + -2a = -51

Add '2a' to each side of the equation.
A + -2a + 2a = -51 + 2a

Combine like terms: -2a + 2a = 0
A + 0 = -51 + 2a
A = -51 + 2a

Simplifying
A = -51 + 2a

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