|7х+21,1|=(12×5)/0,6
|7х+21,1|=100
1)7х+21,1=100 2)7х+21,1= - 100
7х=100-21,1 7х= - 100-21 ,1
7х=87,9 7х = -121,1
х=87,9/7 х= -121,1/7
х=879/70 х= -17,3
х=12цел.30/70
х=12цел.3/7
<span>(0,9464/(3,5*0,13)+3,92)*0,18=1.08
1)3.5*0.13=0.455
2)0.9464/0.455=2=0.8
3)2.08+3.92=6
4)6*0.18=1.08</span>