11-7-x=79-21x

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Solution for 11-7-x=79-21x equation:


Simplifying
11 + -7 + -1x = 79 + -21x

Combine like terms: 11 + -7 = 4
4 + -1x = 79 + -21x

Solving
4 + -1x = 79 + -21x

Solving for variable 'x'.

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

Add '21x' to each side of the equation.
4 + -1x + 21x = 79 + -21x + 21x

Combine like terms: -1x + 21x = 20x
4 + 20x = 79 + -21x + 21x

Combine like terms: -21x + 21x = 0
4 + 20x = 79 + 0
4 + 20x = 79

Add '-4' to each side of the equation.
4 + -4 + 20x = 79 + -4

Combine like terms: 4 + -4 = 0
0 + 20x = 79 + -4
20x = 79 + -4

Combine like terms: 79 + -4 = 75
20x = 75

Divide each side by '20'.
x = 3.75

Simplifying
x = 3.75

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