НОК(220;165;77)=2×2×11×7×3×5=4620
220/2 165/3 77/11
110/2 55/5 7/7
55/5 11/11 1
11/11 1
1/
220=2×2×5×11
165=3×5×11
77=11×7
НОК(63;42;168)=3×3×2×2×23×7=5166
63/3 42/2 168/2
21/3 21/3 84/2
7/7 7/7 42/2
1/ 1/ 21/3
7/7
1/
63=3×3×7
42=2×3×7
168=2×2×23×7
<span>0,047: х = 0,5
х=0.047:0.5
х=0.094
Ответ: </span>х=0.094
3 4/9 - 1 5/6= 1 11/18
31/9 - 11/6= 29/18
29/18=29/18 или
1 11/18=1 11/18
<span>1.8х+2.4(х+0.2)=2.16
4.2(x+0.2)=2.16
x=4.2*2.16
x=9.072
x=9.072-0.2
x=8.872
</span>