7x+0.4=21.4

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Solution for 7x+0.4=21.4 equation: 


Simplifying
7x + 0.4 = 21.4

Reorder the terms:
0.4 + 7x = 21.4

Solving
0.4 + 7x = 21.4

Solving for variable 'x'.

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

Add '-0.4' to each side of the equation.
0.4 + -0.4 + 7x = 21.4 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + 7x = 21.4 + -0.4
7x = 21.4 + -0.4

Combine like terms: 21.4 + -0.4 = 21
7x = 21

Divide each side by '7'.
x = 3

Simplifying
x = 3

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