0.7x+0.4=3.9

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Solution for 0.7x+0.4=3.9 equation: 


Simplifying
0.7x + 0.4 = 3.9

Reorder the terms:
0.4 + 0.7x = 3.9

Solving
0.4 + 0.7x = 3.9

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 + 0.7x = 3.9 + -0.4

Combine like terms: 0.4 + -0.4 = 0.0
0.0 + 0.7x = 3.9 + -0.4
0.7x = 3.9 + -0.4

Combine like terms: 3.9 + -0.4 = 3.5
0.7x = 3.5

Divide each side by '0.7'.
x = 5

Simplifying
x = 5

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