Rezolva acest exercitiu!

Răspuns:
=(³1+2/3)×[(⁴1/150-³1/200)÷1/300+14/25×(⁶1/42+⁷5/36+⁴1/63)]=
=5/3×[1/600×300/1+14/25×45/252]=
=5/3×(⁵1/2+1/10)
=5/3×6/10=1