28=b-13

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Solution for 28=b-13 equation:


Simplifying
28 = b + -13

Reorder the terms:
28 = -13 + b

Solving
28 = -13 + 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 = -13 + b + -1b

Combine like terms: b + -1b = 0
28 + -1b = -13 + 0
28 + -1b = -13

Add '-28' to each side of the equation.
28 + -28 + -1b = -13 + -28

Combine like terms: 28 + -28 = 0
0 + -1b = -13 + -28
-1b = -13 + -28

Combine like terms: -13 + -28 = -41
-1b = -41

Divide each side by '-1'.
b = 41

Simplifying
b = 41

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