-21x+7=91

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Solution for -21x+7=91 equation: 


Simplifying
-21x + 7 = 91

Reorder the terms:
7 + -21x = 91

Solving
7 + -21x = 91

Solving for variable 'x'.

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

Add '-7' to each side of the equation.
7 + -7 + -21x = 91 + -7

Combine like terms: 7 + -7 = 0
0 + -21x = 91 + -7
-21x = 91 + -7

Combine like terms: 91 + -7 = 84
-21x = 84

Divide each side by '-21'.
x = -4

Simplifying
x = -4

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