0.07(x)+0.1(9000-x)=720

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Solution for 0.07(x)+0.1(9000-x)=720 equation: 


Simplifying
0.07(x) + 0.1(9000 + -1x) = 720
0.07x + (9000 * 0.1 + -1x * 0.1) = 720
0.07x + (900 + -0.1x) = 720

Reorder the terms:
900 + 0.07x + -0.1x = 720

Combine like terms: 0.07x + -0.1x = -0.03x
900 + -0.03x = 720

Solving
900 + -0.03x = 720

Solving for variable 'x'.

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

Add '-900' to each side of the equation.
900 + -900 + -0.03x = 720 + -900

Combine like terms: 900 + -900 = 0
0 + -0.03x = 720 + -900
-0.03x = 720 + -900

Combine like terms: 720 + -900 = -180
-0.03x = -180

Divide each side by '-0.03'.
x = 6000

Simplifying
x = 6000

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