Răspuns:
Explicație pas cu pas:
6.
a) x = 5*7/2 = 35/2
b) x = 4*5/9 = 20/9
c) x = 10*11/5 = 22
d) x = 13*1/4 = 13/4
e) x = 3*5/1 = 15/1
f) 0,(3) = 3/9 = 1/3
0,(2) = 2/9
x = 0,(3)*0,(2)/2 = 1/3*2/9*/2 = 1/27
g) 0,5 = 5/10 = 1/2
x = 1/2*1/2 : 3 = 1/4*1/3 = 1/12
h) x = 2 * 3/2 : 1/4 = 3 * 4 = 12
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7.
2/3 = x/24
x = 24*2/3 = 16
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8.
4/5 = 36/x
x = 5*36/4 = 45
