Question

7.8 razy x rowna sie 1 \4 x:5\6 =9.5 4 1\2 razy x =6.25

Answer 1

7.8 x A = 1/4
A = 1/4 : 7.8= 7.80 : 0.75=10.4
A=10,4
B : 5/6 = 9.5
B= 9.5 x 5/6 = 9 1/2 x 5/6 = 7 3/4
B =7 3/4
4 1/2 x C = 6.25
C 6.25 : 4 1/2 = 6 1/4 : 4 1/2 = 25/4 : 9/2 = 25/4 x 2/9 = 50/39 = 1 11/50

Answer 2

1) 
x= 1/4 : 7.8= 7,8:0,75=10,4
x=10,4
2) 
x=9.5razy 5/6 = 9 1/2 razy 5/6 = 7 3/4
x=7 3/4
3)
6 1/4 razy 4 1/2 = 25/18= 1 7/18

Miałam to niedawno. Jak coś to pisz :)