0.02x+0.09(200-x)=13.1

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Solution for 0.02x+0.09(200-x)=13.1 equation:


Simplifying
0.02x + 0.09(200 + -1x) = 13.1
0.02x + (200 * 0.09 + -1x * 0.09) = 13.1
0.02x + (18 + -0.09x) = 13.1

Reorder the terms:
18 + 0.02x + -0.09x = 13.1

Combine like terms: 0.02x + -0.09x = -0.07x
18 + -0.07x = 13.1

Solving
18 + -0.07x = 13.1

Solving for variable 'x'.

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

Add '-18' to each side of the equation.
18 + -18 + -0.07x = 13.1 + -18

Combine like terms: 18 + -18 = 0
0 + -0.07x = 13.1 + -18
-0.07x = 13.1 + -18

Combine like terms: 13.1 + -18 = -4.9
-0.07x = -4.9

Divide each side by '-0.07'.
x = 70

Simplifying
x = 70

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