20(1-x)+13x=42

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Solution for 20(1-x)+13x=42 equation:


Simplifying
20(1 + -1x) + 13x = 42
(1 * 20 + -1x * 20) + 13x = 42
(20 + -20x) + 13x = 42

Combine like terms: -20x + 13x = -7x
20 + -7x = 42

Solving
20 + -7x = 42

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + -7x = 42 + -20

Combine like terms: 20 + -20 = 0
0 + -7x = 42 + -20
-7x = 42 + -20

Combine like terms: 42 + -20 = 22
-7x = 22

Divide each side by '-7'.
x = -3.142857143

Simplifying
x = -3.142857143

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