6(3b+5)=(6b-21)

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Solution for 6(3b+5)=(6b-21) equation:


Simplifying
6(3b + 5) = (6b + -21)

Reorder the terms:
6(5 + 3b) = (6b + -21)
(5 * 6 + 3b * 6) = (6b + -21)
(30 + 18b) = (6b + -21)

Reorder the terms:
30 + 18b = (-21 + 6b)

Remove parenthesis around (-21 + 6b)
30 + 18b = -21 + 6b

Solving
30 + 18b = -21 + 6b

Solving for variable 'b'.

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

Add '-6b' to each side of the equation.
30 + 18b + -6b = -21 + 6b + -6b

Combine like terms: 18b + -6b = 12b
30 + 12b = -21 + 6b + -6b

Combine like terms: 6b + -6b = 0
30 + 12b = -21 + 0
30 + 12b = -21

Add '-30' to each side of the equation.
30 + -30 + 12b = -21 + -30

Combine like terms: 30 + -30 = 0
0 + 12b = -21 + -30
12b = -21 + -30

Combine like terms: -21 + -30 = -51
12b = -51

Divide each side by '12'.
b = -4.25

Simplifying
b = -4.25

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