Question

Help please. . .

Answer 1

$Hello$ $There!$

The answer is..

$4.7.$

$AnimeVines$

Answer 2

0.4x + 3.9 = 5.78

1. Subtraction property of equality:

Subtract 3.9 from both sides of the equal sign:

0.4x = 1.88

2. division property of equality:

Divide both sides of the equal sign by 0.4:

X = 4.7