2b+15=b+31

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Solution for 2b+15=b+31 equation:


Simplifying
2b + 15 = b + 31

Reorder the terms:
15 + 2b = b + 31

Reorder the terms:
15 + 2b = 31 + b

Solving
15 + 2b = 31 + b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
15 + 2b + -1b = 31 + b + -1b

Combine like terms: 2b + -1b = 1b
15 + 1b = 31 + b + -1b

Combine like terms: b + -1b = 0
15 + 1b = 31 + 0
15 + 1b = 31

Add '-15' to each side of the equation.
15 + -15 + 1b = 31 + -15

Combine like terms: 15 + -15 = 0
0 + 1b = 31 + -15
1b = 31 + -15

Combine like terms: 31 + -15 = 16
1b = 16

Divide each side by '1'.
b = 16

Simplifying
b = 16

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