3*7+7x=-21

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


Simplifying
3 * 7 + 7x = -21

Multiply 3 * 7
21 + 7x = -21

Solving
21 + 7x = -21

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 + 7x = -21 + -21

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

Combine like terms: -21 + -21 = -42
7x = -42

Divide each side by '7'.
x = -6

Simplifying
x = -6

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