148-(18+19)=(148-37)=111
694-(17+94)=(694-111)=583
<span> a=3^200= 9^100,
b=4^100,
c=2^300=8^100
b<c<a</span>
3.5*(7 2/5) +( 2 2/5)*3.5= 3.5*( 7 2/5 + 2 2/5)=
3.5 *( 9 4/5)=3.5*(10 -1/5)=
3.5*10-3.5*(1/5)=
35 - 0.7=34.3
12|2. 35|5
6|2. 7|7
3|3. 1|
1|
345-3/4
345:3=115 - 1/4
115*4=460 - изнач число