4-(2x+21)=13

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Solution for 4-(2x+21)=13 equation:


Simplifying
4 + -1(2x + 21) = 13

Reorder the terms:
4 + -1(21 + 2x) = 13
4 + (21 * -1 + 2x * -1) = 13
4 + (-21 + -2x) = 13

Combine like terms: 4 + -21 = -17
-17 + -2x = 13

Solving
-17 + -2x = 13

Solving for variable 'x'.

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

Add '17' to each side of the equation.
-17 + 17 + -2x = 13 + 17

Combine like terms: -17 + 17 = 0
0 + -2x = 13 + 17
-2x = 13 + 17

Combine like terms: 13 + 17 = 30
-2x = 30

Divide each side by '-2'.
x = -15

Simplifying
x = -15

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