0.04x+0.07(4000-x)=

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Solution for 0.04x+0.07(4000-x)= equation:


Simplifying
0.04x + 0.07(4000 + -1x) = 0
0.04x + (4000 * 0.07 + -1x * 0.07) = 0
0.04x + (280 + -0.07x) = 0

Reorder the terms:
280 + 0.04x + -0.07x = 0

Combine like terms: 0.04x + -0.07x = -0.03x
280 + -0.03x = 0

Solving
280 + -0.03x = 0

Solving for variable 'x'.

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

Add '-280' to each side of the equation.
280 + -280 + -0.03x = 0 + -280

Combine like terms: 280 + -280 = 0
0 + -0.03x = 0 + -280
-0.03x = 0 + -280

Combine like terms: 0 + -280 = -280
-0.03x = -280

Divide each side by '-0.03'.
x = 9333.333333

Simplifying
x = 9333.333333

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