29=20+b

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Solution for 29=20+b equation:


Simplifying
29 = 20 + b

Solving
29 = 20 + 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.
29 + -1b = 20 + b + -1b

Combine like terms: b + -1b = 0
29 + -1b = 20 + 0
29 + -1b = 20

Add '-29' to each side of the equation.
29 + -29 + -1b = 20 + -29

Combine like terms: 29 + -29 = 0
0 + -1b = 20 + -29
-1b = 20 + -29

Combine like terms: 20 + -29 = -9
-1b = -9

Divide each side by '-1'.
b = 9

Simplifying
b = 9

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