Question

1.Efectuati , ținând cont de ordinea efectuării operațiilor

Answer 1

a) 17,24+{2,88:1,2+4,5•[2,4•3,9-0,4:(6,3-3,51:2,7)]}=17,24+{2,88:1,2+4,5•[2,4•3,9-0,4:(6,3-1,3)]}=17,24+[2,88:1,2+4,5•(2,4•3,9-0,4:5)]=17,24+[2,88:1,2+4,5•(9,36-0,08)=17,24+(2,88:1,2+4,5•9,28=17,24+2,4+41,76=61,4
b) 0,14•[2,75+(3,46+0,52-6:5):0,1]=0,14•[2,75+3,46+0,56-1,2):0,1]=0,14•(2,75+2,82:0,1)=0,14•(2,75+28,2)=0,14•30,95=4,333