9X+21=4X+121

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Solution for 9X+21=4X+121 equation:


Simplifying
9X + 21 = 4X + 121

Reorder the terms:
21 + 9X = 4X + 121

Reorder the terms:
21 + 9X = 121 + 4X

Solving
21 + 9X = 121 + 4X

Solving for variable 'X'.

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

Add '-4X' to each side of the equation.
21 + 9X + -4X = 121 + 4X + -4X

Combine like terms: 9X + -4X = 5X
21 + 5X = 121 + 4X + -4X

Combine like terms: 4X + -4X = 0
21 + 5X = 121 + 0
21 + 5X = 121

Add '-21' to each side of the equation.
21 + -21 + 5X = 121 + -21

Combine like terms: 21 + -21 = 0
0 + 5X = 121 + -21
5X = 121 + -21

Combine like terms: 121 + -21 = 100
5X = 100

Divide each side by '5'.
X = 20

Simplifying
X = 20

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