10x+21=13x

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Solution for 10x+21=13x equation:


Simplifying
10x + 21 = 13x

Reorder the terms:
21 + 10x = 13x

Solving
21 + 10x = 13x

Solving for variable 'x'.

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

Add '-13x' to each side of the equation.
21 + 10x + -13x = 13x + -13x

Combine like terms: 10x + -13x = -3x
21 + -3x = 13x + -13x

Combine like terms: 13x + -13x = 0
21 + -3x = 0

Add '-21' to each side of the equation.
21 + -21 + -3x = 0 + -21

Combine like terms: 21 + -21 = 0
0 + -3x = 0 + -21
-3x = 0 + -21

Combine like terms: 0 + -21 = -21
-3x = -21

Divide each side by '-3'.
x = 7

Simplifying
x = 7

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