3х-6-2х-8=6
3х-2х=6+6+8
х=20
К(360)=360,720
К(240)=240,480,720
К(80)=80,160,240,320,400,480,560,640,720
НОК(360,240,80)=720
<span>3,8m-(2,8+0,7m) =3,8*2,4-(2,8+0,7*2,4)=4,64
0,7*2,4=1,68
2,8+1,68=4,48
3,8*2,4=9,12
9,12-4,48=4,64
3,8m-(2,8+0,7m) =3,8*8,57-(2,8+0,7*8,57)= 23,767
0,7*8,57=5,999
2,8+5,999=8,799
3,8*8,57=32,566
32566-8,799=23,767</span>