Question

B)9•{8+7•[6+5•(4+3•(2+1))]}:(1+2+3+…+9)

Answer 1

Răspuns:

101

Explicație pas cu pas:

9•{8+7•[6+5•(4+3•(2+1)]}:(1+2+3+…+9)

= 9•{8+7•[6+5•(4+3•3)]}:45 - Suma 1+2+...+9 = (9·10):2 = 45

= 9•{8+7•[6+5•(4+9)]}:45

= 9•[8+7•(6+5•13)]:45

= 9•[8+7•[6+65)]:45

= 9•(8+7•71):45

= 9•(8+497):45

= 9•505:45

= 4545:45

= 101