21.39-2.10=12.99b

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Solution for 21.39-2.10=12.99b equation: 


Simplifying
21.39 + -2.10 = 12.99b

Combine like terms: 21.39 + -2.10 = 19.29
19.29 = 12.99b

Solving
19.29 = 12.99b

Solving for variable 'b'.

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

Add '-12.99b' to each side of the equation.
19.29 + -12.99b = 12.99b + -12.99b

Combine like terms: 12.99b + -12.99b = 0.00
19.29 + -12.99b = 0.00

Add '-19.29' to each side of the equation.
19.29 + -19.29 + -12.99b = 0.00 + -19.29

Combine like terms: 19.29 + -19.29 = 0.00
0.00 + -12.99b = 0.00 + -19.29
-12.99b = 0.00 + -19.29

Combine like terms: 0.00 + -19.29 = -19.29
-12.99b = -19.29

Divide each side by '-12.99'.
b = 1.484988453

Simplifying
b = 1.484988453

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