7(3.4b+-1.2)=115.5

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Solution for 7(3.4b+-1.2)=115.5 equation: 


Simplifying
7(3.4b + -1.2) = 115.5

Reorder the terms:
7(-1.2 + 3.4b) = 115.5
(-1.2 * 7 + 3.4b * 7) = 115.5
(-8.4 + 23.8b) = 115.5

Solving
-8.4 + 23.8b = 115.5

Solving for variable 'b'.

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

Add '8.4' to each side of the equation.
-8.4 + 8.4 + 23.8b = 115.5 + 8.4

Combine like terms: -8.4 + 8.4 = 0.0
0.0 + 23.8b = 115.5 + 8.4
23.8b = 115.5 + 8.4

Combine like terms: 115.5 + 8.4 = 123.9
23.8b = 123.9

Divide each side by '23.8'.
b = 5.205882353

Simplifying
b = 5.205882353

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