7(1-x)-1=20

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Solution for 7(1-x)-1=20 equation:


Simplifying
7(1 + -1x) + -1 = 20
(1 * 7 + -1x * 7) + -1 = 20
(7 + -7x) + -1 = 20

Reorder the terms:
7 + -1 + -7x = 20

Combine like terms: 7 + -1 = 6
6 + -7x = 20

Solving
6 + -7x = 20

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + -7x = 20 + -6

Combine like terms: 6 + -6 = 0
0 + -7x = 20 + -6
-7x = 20 + -6

Combine like terms: 20 + -6 = 14
-7x = 14

Divide each side by '-7'.
x = -2

Simplifying
x = -2

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