2b-18=.4b-3

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Solution for 2b-18=.4b-3 equation:


Simplifying
2b + -18 = 0.4b + -3

Reorder the terms:
-18 + 2b = 0.4b + -3

Reorder the terms:
-18 + 2b = -3 + 0.4b

Solving
-18 + 2b = -3 + 0.4b

Solving for variable 'b'.

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

Add '-0.4b' to each side of the equation.
-18 + 2b + -0.4b = -3 + 0.4b + -0.4b

Combine like terms: 2b + -0.4b = 1.6b
-18 + 1.6b = -3 + 0.4b + -0.4b

Combine like terms: 0.4b + -0.4b = 0.0
-18 + 1.6b = -3 + 0.0
-18 + 1.6b = -3

Add '18' to each side of the equation.
-18 + 18 + 1.6b = -3 + 18

Combine like terms: -18 + 18 = 0
0 + 1.6b = -3 + 18
1.6b = -3 + 18

Combine like terms: -3 + 18 = 15
1.6b = 15

Divide each side by '1.6'.
b = 9.375

Simplifying
b = 9.375

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