9X-7=21+5X

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Solution for 9X-7=21+5X equation:


Simplifying
9X + -7 = 21 + 5X

Reorder the terms:
-7 + 9X = 21 + 5X

Solving
-7 + 9X = 21 + 5X

Solving for variable 'X'.

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

Add '-5X' to each side of the equation.
-7 + 9X + -5X = 21 + 5X + -5X

Combine like terms: 9X + -5X = 4X
-7 + 4X = 21 + 5X + -5X

Combine like terms: 5X + -5X = 0
-7 + 4X = 21 + 0
-7 + 4X = 21

Add '7' to each side of the equation.
-7 + 7 + 4X = 21 + 7

Combine like terms: -7 + 7 = 0
0 + 4X = 21 + 7
4X = 21 + 7

Combine like terms: 21 + 7 = 28
4X = 28

Divide each side by '4'.
X = 7

Simplifying
X = 7

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