7b-13=3(3+6b)

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Solution for 7b-13=3(3+6b) equation: 


Simplifying
7b + -13 = 3(3 + 6b)

Reorder the terms:
-13 + 7b = 3(3 + 6b)
-13 + 7b = (3 * 3 + 6b * 3)
-13 + 7b = (9 + 18b)

Solving
-13 + 7b = 9 + 18b

Solving for variable 'b'.

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

Add '-18b' to each side of the equation.
-13 + 7b + -18b = 9 + 18b + -18b

Combine like terms: 7b + -18b = -11b
-13 + -11b = 9 + 18b + -18b

Combine like terms: 18b + -18b = 0
-13 + -11b = 9 + 0
-13 + -11b = 9

Add '13' to each side of the equation.
-13 + 13 + -11b = 9 + 13

Combine like terms: -13 + 13 = 0
0 + -11b = 9 + 13
-11b = 9 + 13

Combine like terms: 9 + 13 = 22
-11b = 22

Divide each side by '-11'.
b = -2

Simplifying
b = -2

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