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Znajdź 3/17 sumy liczb 1 1/2; -2 1/3; 3 2/3
3/17*(1 1/2-2 1/3+3 2/3)=3/17*(1 1/2 +1 1/3)=3/17*( 1 3/6+ 1 2/6)=3/17*(2 5/6)=3/17*17/6=1/2
zad2
Znajdź 6/17 różnicy liczb -8 5/8 i -3 2/3
6/17*(-8 5/8 - (-3 2/3))=6/17*(-8 5/8+3 2/3)=6/17* (-8 15/24 +3 16/24)=6/17*(-7 39/24+3 16/24)= 6/17*(-4 23/24)=6/17*( -119/24)= -714/408= -1 306/408 =-1 3/4
zad3
Znajdź liczbę, której 1/5 stanowi 3/4 liczby -23 3/5
3/4 * (-23 3/5)=3/4 *(-118/5)= -354/20=- 17 14/20=-17 7/10
x*1/5=-17,7
x=(-17,7)*5/1=- 88,5 -szukana liczba
3/17*(9/6-14/6+22/6)=
3/17*17/6=1/2
2)6/17*(69/8+11/3)=
6/17*(207/24+88/24)=
6/17*295/24=295/68
3)1/5x=3/4*-118/5
x=3/4*-118
x=177/2=88,5