7(-3)-3x=18

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Solution for 7(-3)-3x=18 equation: 


Simplifying
7(-3) + -3x = 18

Multiply 7 * -3
-21 + -3x = 18

Solving
-21 + -3x = 18

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + -3x = 18 + 21

Combine like terms: -21 + 21 = 0
0 + -3x = 18 + 21
-3x = 18 + 21

Combine like terms: 18 + 21 = 39
-3x = 39

Divide each side by '-3'.
x = -13

Simplifying
x = -13

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