Odpowiedź:
Szczegółowe wyjaśnienie:
7. a) 16-a-9
-a=9-16
-a=-7
a=7
b) 8 1/5 + c = 10 7/10
41/5 + c = 107/10
c = 107/10 - 41/5
c = 5/2
c) 4 2/3 * p = 4
14/3 p = 4
p = 6/7
d) a : 1 1/3 = 1/6
a : 4/3 = 1/6
a * 3/4 = 1/6
3/4 a = 1/6
a = 2/9
#8. x * 3 1/2 = 2/7
x * 7/2 = 2/7
7/2 x = 2/7
x = 4/49
