4-(5-2x)=21

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Solution for 4-(5-2x)=21 equation:


Simplifying
4 + -1(5 + -2x) = 21
4 + (5 * -1 + -2x * -1) = 21
4 + (-5 + 2x) = 21

Combine like terms: 4 + -5 = -1
-1 + 2x = 21

Solving
-1 + 2x = 21

Solving for variable 'x'.

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

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

Combine like terms: -1 + 1 = 0
0 + 2x = 21 + 1
2x = 21 + 1

Combine like terms: 21 + 1 = 22
2x = 22

Divide each side by '2'.
x = 11

Simplifying
x = 11

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