.04x+.07(1200-x)=720

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Solution for .04x+.07(1200-x)=720 equation:


Simplifying
0.04x + 0.07(1200 + -1x) = 720
0.04x + (1200 * 0.07 + -1x * 0.07) = 720
0.04x + (84 + -0.07x) = 720

Reorder the terms:
84 + 0.04x + -0.07x = 720

Combine like terms: 0.04x + -0.07x = -0.03x
84 + -0.03x = 720

Solving
84 + -0.03x = 720

Solving for variable 'x'.

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

Add '-84' to each side of the equation.
84 + -84 + -0.03x = 720 + -84

Combine like terms: 84 + -84 = 0
0 + -0.03x = 720 + -84
-0.03x = 720 + -84

Combine like terms: 720 + -84 = 636
-0.03x = 636

Divide each side by '-0.03'.
x = -21200

Simplifying
x = -21200

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