<span>6*(3x - 0.7) = 4.8
18x - 4,2 = 4,8
18x = 4,8 + 4,2
18x = 9
x = 9 : 18
x = 0,5
</span>
1 действие:
168+147=315
2 действие
315÷2=157,5
5/9-13/27
3/8-5/24 =9/24-5/24=4/24=1/6
2/5-3/8 =16/40-15/40=1/40
5/12-13/72 =30/72-13/72=17/72
3/5-1/7 =21/35-5/35=16/35
11/12-19/60 =55/60-19/60=36/60=6/10=3/5=0,6
9/17-27/68 =36/68-27/68=9/68
2/3-5/16 =32/48-15/48=17/48
9/10-4/15 =27/30-8/30=19/30
<span>4/15-11/60 =16/60-11/60=5/60=1/12
5/8-1/3=15/24-8/24=7/24</span>