3.5x+4=21.5

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Solution for 3.5x+4=21.5 equation: 


Simplifying
3.5x + 4 = 21.5

Reorder the terms:
4 + 3.5x = 21.5

Solving
4 + 3.5x = 21.5

Solving for variable 'x'.

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

Add '-4' to each side of the equation.
4 + -4 + 3.5x = 21.5 + -4

Combine like terms: 4 + -4 = 0
0 + 3.5x = 21.5 + -4
3.5x = 21.5 + -4

Combine like terms: 21.5 + -4 = 17.5
3.5x = 17.5

Divide each side by '3.5'.
x = 5

Simplifying
x = 5

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