0.05x+0.07(200-x)=12.8

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Solution for 0.05x+0.07(200-x)=12.8 equation:


Simplifying
0.05x + 0.07(200 + -1x) = 12.8
0.05x + (200 * 0.07 + -1x * 0.07) = 12.8
0.05x + (14 + -0.07x) = 12.8

Reorder the terms:
14 + 0.05x + -0.07x = 12.8

Combine like terms: 0.05x + -0.07x = -0.02x
14 + -0.02x = 12.8

Solving
14 + -0.02x = 12.8

Solving for variable 'x'.

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

Add '-14' to each side of the equation.
14 + -14 + -0.02x = 12.8 + -14

Combine like terms: 14 + -14 = 0
0 + -0.02x = 12.8 + -14
-0.02x = 12.8 + -14

Combine like terms: 12.8 + -14 = -1.2
-0.02x = -1.2

Divide each side by '-0.02'.
x = 60

Simplifying
x = 60

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