Пошаговое объяснение:
1)
9-2/3+6 7/24-2 1/4=
=8 24/24-2/3+6 7/24-2 1/4=
=(8+6-2)+(24/24-16/24+7/24-6/24)=
=12+9/24=12+3/8=12 3/8
2)
8 13/30+13 4/5-5 5/6+7/10=
=(8+13-5)+(13/30+24/30-25/30+21/30)=
=16+33/30=16+11/10=16+1 1/10=17 1/10=17,1
3)
17 3/4-9 1/32+4 3/8-5 3/16=
=(17-9+4-5)+(24/32-1/32+12/32-6/32)=
=7+29/32=7 29/32
4)
21 4/15+1 5/6-9 7/30+16 7/24=
=(21+1-9+16)+
+(32/120+100/120-28/120+35/120)=
=29+139/120=29+1 19/120=30 19/120
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Answers & Comments
Пошаговое объяснение:
1)
9-2/3+6 7/24-2 1/4=
=8 24/24-2/3+6 7/24-2 1/4=
=(8+6-2)+(24/24-16/24+7/24-6/24)=
=12+9/24=12+3/8=12 3/8
2)
8 13/30+13 4/5-5 5/6+7/10=
=(8+13-5)+(13/30+24/30-25/30+21/30)=
=16+33/30=16+11/10=16+1 1/10=17 1/10=17,1
3)
17 3/4-9 1/32+4 3/8-5 3/16=
=(17-9+4-5)+(24/32-1/32+12/32-6/32)=
=7+29/32=7 29/32
4)
21 4/15+1 5/6-9 7/30+16 7/24=
=(21+1-9+16)+
+(32/120+100/120-28/120+35/120)=
=29+139/120=29+1 19/120=30 19/120