0.14+0.07(4000-x)=378

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Solution for 0.14+0.07(4000-x)=378 equation: 


Simplifying
0.14 + 0.07(4000 + -1x) = 378
0.14 + (4000 * 0.07 + -1x * 0.07) = 378
0.14 + (280 + -0.07x) = 378

Combine like terms: 0.14 + 280 = 280.14
280.14 + -0.07x = 378

Solving
280.14 + -0.07x = 378

Solving for variable 'x'.

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

Add '-280.14' to each side of the equation.
280.14 + -280.14 + -0.07x = 378 + -280.14

Combine like terms: 280.14 + -280.14 = 0.00
0.00 + -0.07x = 378 + -280.14
-0.07x = 378 + -280.14

Combine like terms: 378 + -280.14 = 97.86
-0.07x = 97.86

Divide each side by '-0.07'.
x = -1398

Simplifying
x = -1398

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