0.07x+0.04(45000-x)=2100

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Solution for 0.07x+0.04(45000-x)=2100 equation: 


Simplifying
0.07x + 0.04(45000 + -1x) = 2100
0.07x + (45000 * 0.04 + -1x * 0.04) = 2100
0.07x + (1800 + -0.04x) = 2100

Reorder the terms:
1800 + 0.07x + -0.04x = 2100

Combine like terms: 0.07x + -0.04x = 0.03x
1800 + 0.03x = 2100

Solving
1800 + 0.03x = 2100

Solving for variable 'x'.

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

Add '-1800' to each side of the equation.
1800 + -1800 + 0.03x = 2100 + -1800

Combine like terms: 1800 + -1800 = 0
0 + 0.03x = 2100 + -1800
0.03x = 2100 + -1800

Combine like terms: 2100 + -1800 = 300
0.03x = 300

Divide each side by '0.03'.
x = 10000

Simplifying
x = 10000

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