Question

determinați termenul necunoscut x ,știind că
a) (7↑x)=7↑81
b) 10↑13=50↑14:x↑13
c) (20:x)↑30=4↑30
Ajutor repede !!
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Answer 1

Răspuns:

a)

(7•x)=7•81

7•x=567

x=567:7

x=81

b)

10•13=50•14:x•13

130=700:x•13

700:x•13=130

700:x=130:13

700:x=10

x=700:10

x=70

c)

(20:x)•30=40•30

(20:x)•30=1200

20:x=1200

x:20=1200

x=1200•20

x=24.000