15+a+b=30

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Solution for 15+a+b=30 equation:


Simplifying
15 + a + b = 30

Solving
15 + a + b = 30

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 + b = 30 + -15

Reorder the terms:
15 + -15 + a + b = 30 + -15

Combine like terms: 15 + -15 = 0
0 + a + b = 30 + -15
a + b = 30 + -15

Combine like terms: 30 + -15 = 15
a + b = 15

Add '-1b' to each side of the equation.
a + b + -1b = 15 + -1b

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

Simplifying
a = 15 + -1b

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