7x+21=-1

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Solution for 7x+21=-1 equation: 


Simplifying
7x + 21 = -1

Reorder the terms:
21 + 7x = -1

Solving
21 + 7x = -1

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 = -1 + -21

Combine like terms: 21 + -21 = 0
0 + 7x = -1 + -21
7x = -1 + -21

Combine like terms: -1 + -21 = -22
7x = -22

Divide each side by '7'.
x = -3.142857143

Simplifying
x = -3.142857143

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