a+(a-15)=55

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Solution for a+(a-15)=55 equation:


Simplifying
a + (a + -15) = 55

Reorder the terms:
a + (-15 + a) = 55

Remove parenthesis around (-15 + a)
a + -15 + a = 55

Reorder the terms:
-15 + a + a = 55

Combine like terms: a + a = 2a
-15 + 2a = 55

Solving
-15 + 2a = 55

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 = 55 + 15

Combine like terms: -15 + 15 = 0
0 + 2a = 55 + 15
2a = 55 + 15

Combine like terms: 55 + 15 = 70
2a = 70

Divide each side by '2'.
a = 35

Simplifying
a = 35

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