21-21x=-11x+42

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Solution for 21-21x=-11x+42 equation:


Simplifying
21 + -21x = -11x + 42

Reorder the terms:
21 + -21x = 42 + -11x

Solving
21 + -21x = 42 + -11x

Solving for variable 'x'.

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

Add '11x' to each side of the equation.
21 + -21x + 11x = 42 + -11x + 11x

Combine like terms: -21x + 11x = -10x
21 + -10x = 42 + -11x + 11x

Combine like terms: -11x + 11x = 0
21 + -10x = 42 + 0
21 + -10x = 42

Add '-21' to each side of the equation.
21 + -21 + -10x = 42 + -21

Combine like terms: 21 + -21 = 0
0 + -10x = 42 + -21
-10x = 42 + -21

Combine like terms: 42 + -21 = 21
-10x = 21

Divide each side by '-10'.
x = -2.1

Simplifying
x = -2.1

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