138.80=0.09x+3.80

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Solution for 138.80=0.09x+3.80 equation: 


Simplifying
138.80 = 0.09x + 3.80

Reorder the terms:
138.80 = 3.80 + 0.09x

Solving
138.80 = 3.80 + 0.09x

Solving for variable 'x'.

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

Add '-0.09x' to each side of the equation.
138.80 + -0.09x = 3.80 + 0.09x + -0.09x

Combine like terms: 0.09x + -0.09x = 0.00
138.80 + -0.09x = 3.80 + 0.00
138.80 + -0.09x = 3.80

Add '-138.80' to each side of the equation.
138.80 + -138.80 + -0.09x = 3.80 + -138.80

Combine like terms: 138.80 + -138.80 = 0.00
0.00 + -0.09x = 3.80 + -138.80
-0.09x = 3.80 + -138.80

Combine like terms: 3.80 + -138.80 = -135
-0.09x = -135

Divide each side by '-0.09'.
x = 1500

Simplifying
x = 1500

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