9b+28=12b+7

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Solution for 9b+28=12b+7 equation:


Simplifying
9b + 28 = 12b + 7

Reorder the terms:
28 + 9b = 12b + 7

Reorder the terms:
28 + 9b = 7 + 12b

Solving
28 + 9b = 7 + 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.
28 + 9b + -12b = 7 + 12b + -12b

Combine like terms: 9b + -12b = -3b
28 + -3b = 7 + 12b + -12b

Combine like terms: 12b + -12b = 0
28 + -3b = 7 + 0
28 + -3b = 7

Add '-28' to each side of the equation.
28 + -28 + -3b = 7 + -28

Combine like terms: 28 + -28 = 0
0 + -3b = 7 + -28
-3b = 7 + -28

Combine like terms: 7 + -28 = -21
-3b = -21

Divide each side by '-3'.
b = 7

Simplifying
b = 7

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