3(a+b)+15-a+b=

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Solution for 3(a+b)+15-a+b= equation:


Simplifying
3(a + b) + 15 + -1a + b = 0
(a * 3 + b * 3) + 15 + -1a + b = 0
(3a + 3b) + 15 + -1a + b = 0

Reorder the terms:
15 + 3a + -1a + 3b + b = 0

Combine like terms: 3a + -1a = 2a
15 + 2a + 3b + b = 0

Combine like terms: 3b + b = 4b
15 + 2a + 4b = 0

Solving
15 + 2a + 4b = 0

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 + 2a + -15 + 4b = 0 + -15

Reorder the terms:
15 + -15 + 2a + 4b = 0 + -15

Combine like terms: 15 + -15 = 0
0 + 2a + 4b = 0 + -15
2a + 4b = 0 + -15

Combine like terms: 0 + -15 = -15
2a + 4b = -15

Add '-4b' to each side of the equation.
2a + 4b + -4b = -15 + -4b

Combine like terms: 4b + -4b = 0
2a + 0 = -15 + -4b
2a = -15 + -4b

Divide each side by '2'.
a = -7.5 + -2b

Simplifying
a = -7.5 + -2b

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