40-3b=4-b

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Solution for 40-3b=4-b equation:


Simplifying
40 + -3b = 4 + -1b

Solving
40 + -3b = 4 + -1b

Solving for variable 'b'.

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

Add 'b' to each side of the equation.
40 + -3b + b = 4 + -1b + b

Combine like terms: -3b + b = -2b
40 + -2b = 4 + -1b + b

Combine like terms: -1b + b = 0
40 + -2b = 4 + 0
40 + -2b = 4

Add '-40' to each side of the equation.
40 + -40 + -2b = 4 + -40

Combine like terms: 40 + -40 = 0
0 + -2b = 4 + -40
-2b = 4 + -40

Combine like terms: 4 + -40 = -36
-2b = -36

Divide each side by '-2'.
b = 18

Simplifying
b = 18

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