Question

sa se rezolve ecuatiile x.1,2=3,6 9,2:x=2,3 15,8-2x=8,3 x:3,5=4,2 0,9x+0,3x=14 (0,4x+2):4=1,52

Answer 1

1,2x = 3,6
x = 3.6:1.2 = 3

9.2:x=2.3
x=9.2:2.3=4

15.8-2x=8.3
15.8-8.3=2x
7.5=2x
x=3.75

x:3.5=4.2
x=2.5x4.2
x=10.5

0.9x+0.3x=14
1.2x=14
x=11.(6)

(0,4x+2):4=1,52
0.4x+2=6.08
0.4x=4.08
x=10.2