3b-15=6(2b+5)

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Solution for 3b-15=6(2b+5) equation:


Simplifying
3b + -15 = 6(2b + 5)

Reorder the terms:
-15 + 3b = 6(2b + 5)

Reorder the terms:
-15 + 3b = 6(5 + 2b)
-15 + 3b = (5 * 6 + 2b * 6)
-15 + 3b = (30 + 12b)

Solving
-15 + 3b = 30 + 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.
-15 + 3b + -12b = 30 + 12b + -12b

Combine like terms: 3b + -12b = -9b
-15 + -9b = 30 + 12b + -12b

Combine like terms: 12b + -12b = 0
-15 + -9b = 30 + 0
-15 + -9b = 30

Add '15' to each side of the equation.
-15 + 15 + -9b = 30 + 15

Combine like terms: -15 + 15 = 0
0 + -9b = 30 + 15
-9b = 30 + 15

Combine like terms: 30 + 15 = 45
-9b = 45

Divide each side by '-9'.
b = -5

Simplifying
b = -5

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