a+2b+(b-15)=109

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Solution for a+2b+(b-15)=109 equation:


Simplifying
a + 2b + (b + -15) = 109

Reorder the terms:
a + 2b + (-15 + b) = 109

Remove parenthesis around (-15 + b)
a + 2b + -15 + b = 109

Reorder the terms:
-15 + a + 2b + b = 109

Combine like terms: 2b + b = 3b
-15 + a + 3b = 109

Solving
-15 + a + 3b = 109

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 + a + 15 + 3b = 109 + 15

Reorder the terms:
-15 + 15 + a + 3b = 109 + 15

Combine like terms: -15 + 15 = 0
0 + a + 3b = 109 + 15
a + 3b = 109 + 15

Combine like terms: 109 + 15 = 124
a + 3b = 124

Add '-3b' to each side of the equation.
a + 3b + -3b = 124 + -3b

Combine like terms: 3b + -3b = 0
a + 0 = 124 + -3b
a = 124 + -3b

Simplifying
a = 124 + -3b

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