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ex 3 va rog dau coroana si puncte plssss​

Ex 3 Va Rog Dau Coroana Si Puncte Plssss class=

Răspuns :

Răspuns:

4a+5b

=9

9

5a+4b

Sper ca am facut bn

5(2a+3b)=4(3a+2b)
10a+15b=12a+8b
2a=7b
a=7b/2

14b+3b/35b/2+4b=17b/35b+8/2=17/43/2=34/43