1)7целых 1/3-6целых 7/8=22/3-55/8=176/24-165/24=11/24
2)11/24÷3/4=11/24*4/3=11/18
3)20+11/18=20 целых11/18
4)5целых 1/4-4целых 21/40=21/4-181/40=210/40-181/40=29/40
5)29/40÷1целых 9/20=29/40*20/29=1/2
6)11/18-1/2=11/18-9/18=2/18=1/9
<span>(1,35+(-6 8/15))*(2 4/5+3,2) = (135/100 - 98/15) *( 2,8 +3,2) = (27 /20 - 98/15) *6 =
= ((81-392) /60)*6 = -311 * 1 / 10 =- 311/10 = -31,1</span>
96 : 4 = 24..................................................
185050:(36000-х)=50
36000-х= 185050:50
36000-х =3701
х=36000-3701
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ответ:32299
А) (-19+11)/-(-4)=-8/4=-2
б) (-15 - (-28))/(-8 - (-12))= (-15+28)/(-8 +12)=13/4=3,25
в) -29/(<span>-2 - 7)=-29/(-9)=29/9=3 2/9</span>
г) (-17 + (-17))/(- 8)=(-17 -17)/(- 8)=-34/(-8)=34/8=17/4=4 1/4=4,25