3+2(2x*-7)+x=-21

Solution for 3+2(2x*-7)+x=-21 equation:

Simplifying
3 + 2(2x * -7) + x = -21

Reorder the terms for easier multiplication:
3 + 2(2 * -7x) + x = -21

Multiply 2 * -7
3 + 2(-14x) + x = -21

Remove parenthesis around (-14x)
3 + 2 * -14x + x = -21

Multiply 2 * -14
3 + -28x + x = -21

Combine like terms: -28x + x = -27x
3 + -27x = -21

Solving
3 + -27x = -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 + -27x = -21 + -3

Combine like terms: 3 + -3 = 0
0 + -27x = -21 + -3
-27x = -21 + -3

Combine like terms: -21 + -3 = -24
-27x = -24

Divide each side by '-27'.
x = 0.8888888889

Simplifying
x = 0.8888888889