30-b=3(8-b)

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Solution for 30-b=3(8-b) equation:


Simplifying
30 + -1b = 3(8 + -1b)
30 + -1b = (8 * 3 + -1b * 3)
30 + -1b = (24 + -3b)

Solving
30 + -1b = 24 + -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.
30 + -1b + 3b = 24 + -3b + 3b

Combine like terms: -1b + 3b = 2b
30 + 2b = 24 + -3b + 3b

Combine like terms: -3b + 3b = 0
30 + 2b = 24 + 0
30 + 2b = 24

Add '-30' to each side of the equation.
30 + -30 + 2b = 24 + -30

Combine like terms: 30 + -30 = 0
0 + 2b = 24 + -30
2b = 24 + -30

Combine like terms: 24 + -30 = -6
2b = -6

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

Simplifying
b = -3

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