Răspuns:
a) = (25+64-23):9=66:9=7,(3)
c) =(143:5-42):3=(26,8-42):3=-15,2:3=-5,0(6)
e). =(18-42)x9-42=-24x9-42=-216-42=-258
g). = (836-36+1):3-62=801:3-62=205
b). = (19,6923+23):24=1.7788
d). =(14+19600):7+22=2802+22=2824
(172-132)24-28,2272=40x24-28,2272=931,7728
Explicație pas cu pas: