x-(3x+5)=21

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Solution for x-(3x+5)=21 equation:


Simplifying
x + -1(3x + 5) = 21

Reorder the terms:
x + -1(5 + 3x) = 21
x + (5 * -1 + 3x * -1) = 21
x + (-5 + -3x) = 21

Reorder the terms:
-5 + x + -3x = 21

Combine like terms: x + -3x = -2x
-5 + -2x = 21

Solving
-5 + -2x = 21

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + -2x = 21 + 5

Combine like terms: -5 + 5 = 0
0 + -2x = 21 + 5
-2x = 21 + 5

Combine like terms: 21 + 5 = 26
-2x = 26

Divide each side by '-2'.
x = -13

Simplifying
x = -13

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