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va rog sa-ma ajutati !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

a)  7supra x = 7³ 
b) 2 supra x = 10
c) 3 supra x +16 = 25 
d) 5 supra x +9=144
e) 6 supra x +47=83
 


Răspuns :

a) 7/x = 7³
7³x = 7, x = 7/7³,  x = 1/7²

b) 2/x = 10
10x = 2,  x = 2/10, x = 1/5

c) 3/x + 16 = 25
3/x = 9, 9x = 3, x = 3/9, x = 1/3

d) 5/x + 9 = 144
5/x = 135, 135x = 5, x = 5/135, x = 1/27

e) 6/x + 47 = 83
6/x = 36, 36x = 6, x = 6/36, x = 1/6

Multa bafta