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

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


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

Reorder the terms:
3 + -2(2 + x) = -7x + -21
3 + (2 * -2 + x * -2) = -7x + -21
3 + (-4 + -2x) = -7x + -21

Combine like terms: 3 + -4 = -1
-1 + -2x = -7x + -21

Reorder the terms:
-1 + -2x = -21 + -7x

Solving
-1 + -2x = -21 + -7x

Solving for variable 'x'.

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

Add '7x' to each side of the equation.
-1 + -2x + 7x = -21 + -7x + 7x

Combine like terms: -2x + 7x = 5x
-1 + 5x = -21 + -7x + 7x

Combine like terms: -7x + 7x = 0
-1 + 5x = -21 + 0
-1 + 5x = -21

Add '1' to each side of the equation.
-1 + 1 + 5x = -21 + 1

Combine like terms: -1 + 1 = 0
0 + 5x = -21 + 1
5x = -21 + 1

Combine like terms: -21 + 1 = -20
5x = -20

Divide each side by '5'.
x = -4

Simplifying
x = -4

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