A+B+15=45

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Solution for A+B+15=45 equation:


Simplifying
A + B + 15 = 45

Reorder the terms:
15 + A + B = 45

Solving
15 + A + B = 45

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 = 45 + -15

Reorder the terms:
15 + -15 + A + B = 45 + -15

Combine like terms: 15 + -15 = 0
0 + A + B = 45 + -15
A + B = 45 + -15

Combine like terms: 45 + -15 = 30
A + B = 30

Add '-1B' to each side of the equation.
A + B + -1B = 30 + -1B

Combine like terms: B + -1B = 0
A + 0 = 30 + -1B
A = 30 + -1B

Simplifying
A = 30 + -1B

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