.07(x)+.04(15000-x)=900

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Solution for .07(x)+.04(15000-x)=900 equation:


Simplifying
0.07(x) + 0.04(15000 + -1x) = 900
0.07x + (15000 * 0.04 + -1x * 0.04) = 900
0.07x + (600 + -0.04x) = 900

Reorder the terms:
600 + 0.07x + -0.04x = 900

Combine like terms: 0.07x + -0.04x = 0.03x
600 + 0.03x = 900

Solving
600 + 0.03x = 900

Solving for variable 'x'.

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

Add '-600' to each side of the equation.
600 + -600 + 0.03x = 900 + -600

Combine like terms: 600 + -600 = 0
0 + 0.03x = 900 + -600
0.03x = 900 + -600

Combine like terms: 900 + -600 = 300
0.03x = 300

Divide each side by '0.03'.
x = 10000

Simplifying
x = 10000

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