Найдите сумму: (5,21-4,21)+(6,23-4,32)+(7,34-4,43)+(6,45-2,54)+(5,56-0,65)
5.21-4.21=1 6.23-4.32=1.91 7.34-4.43=2.91 6.45-2.54=3.91 5.56-0.65=4.91 1+1.91+2.91+3.91+4.91=14.64