4.5b-(-1.8)=12.15

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Solution for 4.5b-(-1.8)=12.15 equation: 


Simplifying
4.5b + -1(-1.8) = 12.15

Multiply -1 * -1.8
4.5b + 1.8 = 12.15

Reorder the terms:
1.8 + 4.5b = 12.15

Solving
1.8 + 4.5b = 12.15

Solving for variable 'b'.

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

Add '-1.8' to each side of the equation.
1.8 + -1.8 + 4.5b = 12.15 + -1.8

Combine like terms: 1.8 + -1.8 = 0.0
0.0 + 4.5b = 12.15 + -1.8
4.5b = 12.15 + -1.8

Combine like terms: 12.15 + -1.8 = 10.35
4.5b = 10.35

Divide each side by '4.5'.
b = 2.3

Simplifying
b = 2.3

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