3x+8=21x-17

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Solution for 3x+8=21x-17 equation:


Simplifying
3x + 8 = 21x + -17

Reorder the terms:
8 + 3x = 21x + -17

Reorder the terms:
8 + 3x = -17 + 21x

Solving
8 + 3x = -17 + 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
8 + 3x + -21x = -17 + 21x + -21x

Combine like terms: 3x + -21x = -18x
8 + -18x = -17 + 21x + -21x

Combine like terms: 21x + -21x = 0
8 + -18x = -17 + 0
8 + -18x = -17

Add '-8' to each side of the equation.
8 + -8 + -18x = -17 + -8

Combine like terms: 8 + -8 = 0
0 + -18x = -17 + -8
-18x = -17 + -8

Combine like terms: -17 + -8 = -25
-18x = -25

Divide each side by '-18'.
x = 1.388888889

Simplifying
x = 1.388888889

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