7X-13=5X+21

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Solution for 7X-13=5X+21 equation:


Simplifying
7X + -13 = 5X + 21

Reorder the terms:
-13 + 7X = 5X + 21

Reorder the terms:
-13 + 7X = 21 + 5X

Solving
-13 + 7X = 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.
-13 + 7X + -5X = 21 + 5X + -5X

Combine like terms: 7X + -5X = 2X
-13 + 2X = 21 + 5X + -5X

Combine like terms: 5X + -5X = 0
-13 + 2X = 21 + 0
-13 + 2X = 21

Add '13' to each side of the equation.
-13 + 13 + 2X = 21 + 13

Combine like terms: -13 + 13 = 0
0 + 2X = 21 + 13
2X = 21 + 13

Combine like terms: 21 + 13 = 34
2X = 34

Divide each side by '2'.
X = 17

Simplifying
X = 17

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