1-7x-4x=-21

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Solution for 1-7x-4x=-21 equation: 


Simplifying
1 + -7x + -4x = -21

Combine like terms: -7x + -4x = -11x
1 + -11x = -21

Solving
1 + -11x = -21

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 + -11x = -21 + -1

Combine like terms: 1 + -1 = 0
0 + -11x = -21 + -1
-11x = -21 + -1

Combine like terms: -21 + -1 = -22
-11x = -22

Divide each side by '-11'.
x = 2

Simplifying
x = 2

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