6(3b+5)=2(6b)-21

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Solution for 6(3b+5)=2(6b)-21 equation:


Simplifying
6(3b + 5) = 2(6b) + -21

Reorder the terms:
6(5 + 3b) = 2(6b) + -21
(5 * 6 + 3b * 6) = 2(6b) + -21
(30 + 18b) = 2(6b) + -21

Remove parenthesis around (6b)
30 + 18b = 2 * 6b + -21

Multiply 2 * 6
30 + 18b = 12b + -21

Reorder the terms:
30 + 18b = -21 + 12b

Solving
30 + 18b = -21 + 12b

Solving for variable 'b'.

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

Add '-12b' to each side of the equation.
30 + 18b + -12b = -21 + 12b + -12b

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

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

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

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

Combine like terms: -21 + -30 = -51
6b = -51

Divide each side by '6'.
b = -8.5

Simplifying
b = -8.5

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