13=b+7-4b

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Solution for 13=b+7-4b equation:


Simplifying
13 = b + 7 + -4b

Reorder the terms:
13 = 7 + b + -4b

Combine like terms: b + -4b = -3b
13 = 7 + -3b

Solving
13 = 7 + -3b

Solving for variable 'b'.

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

Add '3b' to each side of the equation.
13 + 3b = 7 + -3b + 3b

Combine like terms: -3b + 3b = 0
13 + 3b = 7 + 0
13 + 3b = 7

Add '-13' to each side of the equation.
13 + -13 + 3b = 7 + -13

Combine like terms: 13 + -13 = 0
0 + 3b = 7 + -13
3b = 7 + -13

Combine like terms: 7 + -13 = -6
3b = -6

Divide each side by '3'.
b = -2

Simplifying
b = -2

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