3x+17=21-5x

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Solution for 3x+17=21-5x equation:


Simplifying
3x + 17 = 21 + -5x

Reorder the terms:
17 + 3x = 21 + -5x

Solving
17 + 3x = 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.
17 + 3x + 5x = 21 + -5x + 5x

Combine like terms: 3x + 5x = 8x
17 + 8x = 21 + -5x + 5x

Combine like terms: -5x + 5x = 0
17 + 8x = 21 + 0
17 + 8x = 21

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

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

Combine like terms: 21 + -17 = 4
8x = 4

Divide each side by '8'.
x = 0.5

Simplifying
x = 0.5

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