-2+7x-8=21

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Solution for -2+7x-8=21 equation:


Simplifying
-2 + 7x + -8 = 21

Reorder the terms:
-2 + -8 + 7x = 21

Combine like terms: -2 + -8 = -10
-10 + 7x = 21

Solving
-10 + 7x = 21

Solving for variable 'x'.

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

Add '10' to each side of the equation.
-10 + 10 + 7x = 21 + 10

Combine like terms: -10 + 10 = 0
0 + 7x = 21 + 10
7x = 21 + 10

Combine like terms: 21 + 10 = 31
7x = 31

Divide each side by '7'.
x = 4.428571429

Simplifying
x = 4.428571429

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