Question

va rog dau coroana ​

Answer 1

Răspuns:

4 si 1/2=(4·2+1)/2=9/2=4,5

4,5/3=0,5/x

4,5x=3·0,5=>x=1.5:4,5=>x=0,(3)=>x=3/9=>x=1/3

____________

(x+1)/(x+3)=4/5

5(x+1)=4(x+3)

5x+5=4x+12

5x-4x=12-5

x=7

Answer 2

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