-7x-3=-21

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Solution for -7x-3=-21 equation: 


Simplifying
-7x + -3 = -21

Reorder the terms:
-3 + -7x = -21

Solving
-3 + -7x = -21

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + -7x = -21 + 3

Combine like terms: -3 + 3 = 0
0 + -7x = -21 + 3
-7x = -21 + 3

Combine like terms: -21 + 3 = -18
-7x = -18

Divide each side by '-7'.
x = 2.571428571

Simplifying
x = 2.571428571

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