8X+15=5X+78

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Solution for 8X+15=5X+78 equation:


Simplifying
8X + 15 = 5X + 78

Reorder the terms:
15 + 8X = 5X + 78

Reorder the terms:
15 + 8X = 78 + 5X

Solving
15 + 8X = 78 + 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.
15 + 8X + -5X = 78 + 5X + -5X

Combine like terms: 8X + -5X = 3X
15 + 3X = 78 + 5X + -5X

Combine like terms: 5X + -5X = 0
15 + 3X = 78 + 0
15 + 3X = 78

Add '-15' to each side of the equation.
15 + -15 + 3X = 78 + -15

Combine like terms: 15 + -15 = 0
0 + 3X = 78 + -15
3X = 78 + -15

Combine like terms: 78 + -15 = 63
3X = 63

Divide each side by '3'.
X = 21

Simplifying
X = 21

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