15X+4=10X+21

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Solution for 15X+4=10X+21 equation:


Simplifying
15X + 4 = 10X + 21

Reorder the terms:
4 + 15X = 10X + 21

Reorder the terms:
4 + 15X = 21 + 10X

Solving
4 + 15X = 21 + 10X

Solving for variable 'X'.

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

Add '-10X' to each side of the equation.
4 + 15X + -10X = 21 + 10X + -10X

Combine like terms: 15X + -10X = 5X
4 + 5X = 21 + 10X + -10X

Combine like terms: 10X + -10X = 0
4 + 5X = 21 + 0
4 + 5X = 21

Add '-4' to each side of the equation.
4 + -4 + 5X = 21 + -4

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

Combine like terms: 21 + -4 = 17
5X = 17

Divide each side by '5'.
X = 3.4

Simplifying
X = 3.4

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