21-2x=19-x

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Solution for 21-2x=19-x equation:


Simplifying
21 + -2x = 19 + -1x

Solving
21 + -2x = 19 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
21 + -2x + x = 19 + -1x + x

Combine like terms: -2x + x = -1x
21 + -1x = 19 + -1x + x

Combine like terms: -1x + x = 0
21 + -1x = 19 + 0
21 + -1x = 19

Add '-21' to each side of the equation.
21 + -21 + -1x = 19 + -21

Combine like terms: 21 + -21 = 0
0 + -1x = 19 + -21
-1x = 19 + -21

Combine like terms: 19 + -21 = -2
-1x = -2

Divide each side by '-1'.
x = 2

Simplifying
x = 2

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