Объяснение:
1) (49/8-7/4):(9-22/10*(61/11-35/10))*9/7=(49/8-14/8):(9-22/10(610/110-385/110))9/7=(35/8):(9-22/10*225/110)*9/7=(35/8):(9-9/2)*9/7=(35/8):(18/2-9/2)*9/7=35/8*2/9*9/7=5/4=1,25
2) (23/6-17/15)*5/9+((1/20+24/100)*25/3-7/6)*2=(115/30-34/30)*5/9+((5/100+24/100)*25/3-7/6)*2=81/30*5/9+(29/100*25/3-7/6)*2=3/2+(29/12-7/6)*2=3/2+(29/12-14/12)*2=3/2+15/12*2=3/2+5/2=8/2=4
Объяснение:
1) (49/8-7/4):(9-22/10*(61/11-35/10))*9/7=(49/8-14/8):(9-22/10(610/110-385/110))9/7=(35/8):(9-22/10*225/110)*9/7=(35/8):(9-9/2)*9/7=(35/8):(18/2-9/2)*9/7=35/8*2/9*9/7=5/4=1,25
2) (23/6-17/15)*5/9+((1/20+24/100)*25/3-7/6)*2=(115/30-34/30)*5/9+((5/100+24/100)*25/3-7/6)*2=81/30*5/9+(29/100*25/3-7/6)*2=3/2+(29/12-7/6)*2=3/2+(29/12-14/12)*2=3/2+15/12*2=3/2+5/2=8/2=4