Question

Rezolvati ecuatiile din poza.Ajutorrrrrrrrr

Answer 1

1+2/7{[-5/3+1/48:(2/72-3/72)]:19/2-1/4}
= 1+2/7{[-5/3+1/48: - 1/72]:19/2-1/4}
= 1+2/7{[-5/3-3/2]:19/2-1/4
= 1+2/7{[-10/6-9/6]:19/2-1/4}
= 1+2/7{-19/6 :19/2-1/4}
= 1+2/7{-38/114-1/4}
= 1+2/7{-1/3-1/4}
= 1+2/7{-4/12-3/12}
= 1+2/7(-7/12)
= = 1-1/6= 5/6