b-9+6b=30+9

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Solution for b-9+6b=30+9 equation:


Simplifying
b + -9 + 6b = 30 + 9

Reorder the terms:
-9 + b + 6b = 30 + 9

Combine like terms: b + 6b = 7b
-9 + 7b = 30 + 9

Combine like terms: 30 + 9 = 39
-9 + 7b = 39

Solving
-9 + 7b = 39

Solving for variable 'b'.

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

Add '9' to each side of the equation.
-9 + 9 + 7b = 39 + 9

Combine like terms: -9 + 9 = 0
0 + 7b = 39 + 9
7b = 39 + 9

Combine like terms: 39 + 9 = 48
7b = 48

Divide each side by '7'.
b = 6.857142857

Simplifying
b = 6.857142857

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