1-7x=-20

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Solution for 1-7x=-20 equation: 


Simplifying
1 + -7x = -20

Solving
1 + -7x = -20

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + -7x = -20 + -1

Combine like terms: 1 + -1 = 0
0 + -7x = -20 + -1
-7x = -20 + -1

Combine like terms: -20 + -1 = -21
-7x = -21

Divide each side by '-7'.
x = 3

Simplifying
x = 3

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