Question

va rog. dau coronita. urgeeeent

Answer 1

a)45 (16+25=
=45×16+45×25
=720+1125
=1845

b)121:(45×10-439)
=121:(450-439)
=121:11
=11

c)[(314:2-57)+25]:25 -5
=125:25-5
=5-5
0

d) {[(120+2×15):75+4]×10-45×5}:80
={[150:75+4]×100-225}:80
={600-225}:80
=375:80
= 4,6