.07x+0.075(4200-x)=306

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Solution for .07x+0.075(4200-x)=306 equation:


Simplifying
0.07x + 0.075(4200 + -1x) = 306
0.07x + (4200 * 0.075 + -1x * 0.075) = 306
0.07x + (315 + -0.075x) = 306

Reorder the terms:
315 + 0.07x + -0.075x = 306

Combine like terms: 0.07x + -0.075x = -0.005x
315 + -0.005x = 306

Solving
315 + -0.005x = 306

Solving for variable 'x'.

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

Add '-315' to each side of the equation.
315 + -315 + -0.005x = 306 + -315

Combine like terms: 315 + -315 = 0
0 + -0.005x = 306 + -315
-0.005x = 306 + -315

Combine like terms: 306 + -315 = -9
-0.005x = -9

Divide each side by '-0.005'.
x = 1800

Simplifying
x = 1800

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