<span>3(х-2)=х+4
</span><span>3х-6=х+4
</span>3x - x = 6+4
2x = 10
x = 10/2 =5
x =5
17/3=5 2/3
24/11=2 2/11
43/21=2 1/21
35/16=2 3/16
40/19=2 2/19
9/4=2 1/4
23/10=2 3/10
471/100=4 71/100
b+1450:5-1480=1820
b=1820+1480-1450:5
b=3300-290
b=3010
Проверка:
3010+1450:5-1480=1820
3010+290-1480=1820
1820=1820
4x=3.9+6.2
4x=10.1
x=2.525
x=2 21/40