7*(20-x)=104-5x

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Solution for 7*(20-x)=104-5x equation:


Simplifying
7(20 + -1x) = 104 + -5x
(20 * 7 + -1x * 7) = 104 + -5x
(140 + -7x) = 104 + -5x

Solving
140 + -7x = 104 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
140 + -7x + 5x = 104 + -5x + 5x

Combine like terms: -7x + 5x = -2x
140 + -2x = 104 + -5x + 5x

Combine like terms: -5x + 5x = 0
140 + -2x = 104 + 0
140 + -2x = 104

Add '-140' to each side of the equation.
140 + -140 + -2x = 104 + -140

Combine like terms: 140 + -140 = 0
0 + -2x = 104 + -140
-2x = 104 + -140

Combine like terms: 104 + -140 = -36
-2x = -36

Divide each side by '-2'.
x = 18

Simplifying
x = 18

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