Question

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

Answer 1

Răspuns:

9{8+7[6+5(4+3(2+1))]}:(1+2+3+...+9) =

= 9{8+7[6+5(4+3x3)]}: 9(9+1)/2 =

= 9{8+7[6+5(4+9)]}:9x10/2=

= 9[8+7(6+5x13)]:9x5=

= 9[8+7(6+65)]:9x5=

= 9(8+7x71):9x5=

= 9(8+497):9x5=

= 9x505:9x5=

= 101

Explicație pas cu pas:

/ inseamna supra ,acolo am aplicat suma gauss