Odpowiedź:
×= - 4
7×-1 = 7*[-4] -1= - 28 -1 = - 29
×= 5
7×- 1= 7*5 -1= 35-1 = 34
×=0
7*0 -1= - 1
b] ×=3
6-×= 6-3=3
×= -2
6- [-2]= 6+2= 8
6-0= 6
] ×=5
×[9-×]= 5 [ 9-5]= 45 -25 =20
×= 8
8[9-8]= 8*1=8
×= -3
-3 [ 9- [-3]]= -3 [ 9+3]= -27 -9= - 36
d] 8-4×
×=3
8-4×= 8 - 4*3= 8-12= -4
8-4×= 8 - 4*[-3]= 8 +12= 20
×= 1/4
8-4×= 8 - 4*1/4= 8-1 = 7 [ skraamy 4 i 4 przez 4]
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Odpowiedź:
×= - 4
7×-1 = 7*[-4] -1= - 28 -1 = - 29
×= 5
7×- 1= 7*5 -1= 35-1 = 34
×=0
7*0 -1= - 1
b] ×=3
6-×= 6-3=3
×= -2
6- [-2]= 6+2= 8
×=0
6-0= 6
] ×=5
×[9-×]= 5 [ 9-5]= 45 -25 =20
×= 8
8[9-8]= 8*1=8
×= -3
-3 [ 9- [-3]]= -3 [ 9+3]= -27 -9= - 36
d] 8-4×
×=3
8-4×= 8 - 4*3= 8-12= -4
×= -3
8-4×= 8 - 4*[-3]= 8 +12= 20
×= 1/4
8-4×= 8 - 4*1/4= 8-1 = 7 [ skraamy 4 i 4 przez 4]
Szczegółowe wyjaśnienie: