Question

3 8,35 + 0,4х = 9-- 4

Answer 1

8.35+0.4x=9.75
0.4x=9.75-8.35
0.4x=1.4
x=1.4 / 0.4
x=3.5

Answer 2

$8,35+0,4x=9 \frac{3}{4}$

8.35+0.4x=9.75
0.4x=9.75-8.35
0.4x=1.4
x=1.4 / 0.4
x=3.5