38=21+b

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Solution for 38=21+b equation:


Simplifying
38 = 21 + b

Solving
38 = 21 + 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.
38 + -1b = 21 + b + -1b

Combine like terms: b + -1b = 0
38 + -1b = 21 + 0
38 + -1b = 21

Add '-38' to each side of the equation.
38 + -38 + -1b = 21 + -38

Combine like terms: 38 + -38 = 0
0 + -1b = 21 + -38
-1b = 21 + -38

Combine like terms: 21 + -38 = -17
-1b = -17

Divide each side by '-1'.
b = 17

Simplifying
b = 17

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