urgent va rog mult!!!

a) (179*7)-(179+7)=1253-186=1067
b) (6900:15)+(690*15)=460+10350=10810
c) (2*2375)+(1000:4)=4750+250=5000
d) (450*5):(1900-1875)=2250:25=90
e) (3*146)*(52:2)=438*26=1138