15=2(a+b)

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


Simplifying
15 = 2(a + b)
15 = (a * 2 + b * 2)
15 = (2a + 2b)

Solving
15 = 2a + 2b

Solving for variable 'a'.

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

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

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

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

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

Divide each side by '-2'.
a = 7.5 + -1b

Simplifying
a = 7.5 + -1b

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