4-2(x+7)=-21

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Solution for 4-2(x+7)=-21 equation:


Simplifying
4 + -2(x + 7) = -21

Reorder the terms:
4 + -2(7 + x) = -21
4 + (7 * -2 + x * -2) = -21
4 + (-14 + -2x) = -21

Combine like terms: 4 + -14 = -10
-10 + -2x = -21

Solving
-10 + -2x = -21

Solving for variable 'x'.

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

Add '10' to each side of the equation.
-10 + 10 + -2x = -21 + 10

Combine like terms: -10 + 10 = 0
0 + -2x = -21 + 10
-2x = -21 + 10

Combine like terms: -21 + 10 = -11
-2x = -11

Divide each side by '-2'.
x = 5.5

Simplifying
x = 5.5

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