4b+7-2b=13

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Solution for 4b+7-2b=13 equation: 


Simplifying
4b + 7 + -2b = 13

Reorder the terms:
7 + 4b + -2b = 13

Combine like terms: 4b + -2b = 2b
7 + 2b = 13

Solving
7 + 2b = 13

Solving for variable 'b'.

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

Add '-7' to each side of the equation.
7 + -7 + 2b = 13 + -7

Combine like terms: 7 + -7 = 0
0 + 2b = 13 + -7
2b = 13 + -7

Combine like terms: 13 + -7 = 6
2b = 6

Divide each side by '2'.
b = 3

Simplifying
b = 3

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