21x-1=18x+13

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Solution for 21x-1=18x+13 equation:


Simplifying
21x + -1 = 18x + 13

Reorder the terms:
-1 + 21x = 18x + 13

Reorder the terms:
-1 + 21x = 13 + 18x

Solving
-1 + 21x = 13 + 18x

Solving for variable 'x'.

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

Add '-18x' to each side of the equation.
-1 + 21x + -18x = 13 + 18x + -18x

Combine like terms: 21x + -18x = 3x
-1 + 3x = 13 + 18x + -18x

Combine like terms: 18x + -18x = 0
-1 + 3x = 13 + 0
-1 + 3x = 13

Add '1' to each side of the equation.
-1 + 1 + 3x = 13 + 1

Combine like terms: -1 + 1 = 0
0 + 3x = 13 + 1
3x = 13 + 1

Combine like terms: 13 + 1 = 14
3x = 14

Divide each side by '3'.
x = 4.666666667

Simplifying
x = 4.666666667

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