21x+2=22x-1

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Solution for 21x+2=22x-1 equation:


Simplifying
21x + 2 = 22x + -1

Reorder the terms:
2 + 21x = 22x + -1

Reorder the terms:
2 + 21x = -1 + 22x

Solving
2 + 21x = -1 + 22x

Solving for variable 'x'.

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

Add '-22x' to each side of the equation.
2 + 21x + -22x = -1 + 22x + -22x

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

Combine like terms: 22x + -22x = 0
2 + -1x = -1 + 0
2 + -1x = -1

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

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

Combine like terms: -1 + -2 = -3
-1x = -3

Divide each side by '-1'.
x = 3

Simplifying
x = 3

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