30+5b=7b

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Solution for 30+5b=7b equation:


Simplifying
30 + 5b = 7b

Solving
30 + 5b = 7b

Solving for variable 'b'.

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

Add '-7b' to each side of the equation.
30 + 5b + -7b = 7b + -7b

Combine like terms: 5b + -7b = -2b
30 + -2b = 7b + -7b

Combine like terms: 7b + -7b = 0
30 + -2b = 0

Add '-30' to each side of the equation.
30 + -30 + -2b = 0 + -30

Combine like terms: 30 + -30 = 0
0 + -2b = 0 + -30
-2b = 0 + -30

Combine like terms: 0 + -30 = -30
-2b = -30

Divide each side by '-2'.
b = 15

Simplifying
b = 15

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