28=12+b+13

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Solution for 28=12+b+13 equation:


Simplifying
28 = 12 + b + 13

Reorder the terms:
28 = 12 + 13 + b

Combine like terms: 12 + 13 = 25
28 = 25 + b

Solving
28 = 25 + 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.
28 + -1b = 25 + b + -1b

Combine like terms: b + -1b = 0
28 + -1b = 25 + 0
28 + -1b = 25

Add '-28' to each side of the equation.
28 + -28 + -1b = 25 + -28

Combine like terms: 28 + -28 = 0
0 + -1b = 25 + -28
-1b = 25 + -28

Combine like terms: 25 + -28 = -3
-1b = -3

Divide each side by '-1'.
b = 3

Simplifying
b = 3

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