Question

h) x+1/2/0,8(3) = 2+1/2/3 (aflati x)
VA ROG REPEDE​

Answer 1

Răspuns:

Explicație pas cu pas:

H) x+1/2/0,8(3) = 2+1/2/3 (aflati x)

x+1/2/0,8(3) = 2+1/2/3  ⇔x+1/2·(83-8)/90=2+1/2·1/3  ⇔

x+1/2:75/90=2+1/6  ⇔x+1/2·90/75=(2·6+1)/6  ⇔x+45/75=13/6  ⇔x+9/15=13/6  ⇔x+3/5=13/6  ⇔x=13/6-3/5  ⇔x=(13·5-3·6)/30  ⇔

x=(65-18)/30  ⇔x=47/30

x+(1/2)/(75/90)=2+(1/2)·(1/3)  ⇔

x+(1/2)/(15/18)=2+1/6  ⇔x+(1/2)·(18/15)=13/6  ⇔x+(1/2)·(6/5)=13/6  ⇔

x+(3/5)=13/6  ⇔x=13/6-3/5  ⇔x=(13·5-3·6)/30  ⇔x=47/30