Răspuns:
Bună!
=3
14.
a) 1320+[48•23+(340•11-60•5)-235•7]=
=1320+[48•23+(3740-300)-235•7]
=1320+(48•23+3440-235•7)
=1320+(1104+3440-1645)
=1320+(1104+1795)
=1320+2899
=4219
b) 2307+{3702+[270÷3+3•(280+5-3•230)]}=
=2307+{3702+[270÷3+3•(280+460)]}
=2307+[3702+(270÷3+3•740)
=2307+[3702+(90+2220)
=2307+(3702+2310)
=2307+6012
=8319
c) 31.975+200•[8•(1270-2•350)+2340÷5]=
=33.975•[8•(1270-700)+2340÷5]
=33.975•(8•570+468)
=33.975•(4460+468)
=33.975•4928
=.... (calculezi tu singur/ă)
15.
a) 785+115+37•(15+23•12)=
=900+37•(15+276)
=937•291
=.... (calculezi singur/ă)
b)...
c)...
d)...
e)...
Explicație pas cu pas:
•=ori
÷=impartit
(la 15 nu mai am timp sa le fac pt ca trb sa plec undeva)
