A+(A-15)=99

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Solution for A+(A-15)=99 equation:


Simplifying
A + (A + -15) = 99

Reorder the terms:
A + (-15 + A) = 99

Remove parenthesis around (-15 + A)
A + -15 + A = 99

Reorder the terms:
-15 + A + A = 99

Combine like terms: A + A = 2A
-15 + 2A = 99

Solving
-15 + 2A = 99

Solving for variable 'A'.

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

Add '15' to each side of the equation.
-15 + 15 + 2A = 99 + 15

Combine like terms: -15 + 15 = 0
0 + 2A = 99 + 15
2A = 99 + 15

Combine like terms: 99 + 15 = 114
2A = 114

Divide each side by '2'.
A = 57

Simplifying
A = 57

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