Răspuns:
axb
4x2=8
2x3=6
5x2=10
axc
4x134=536
2x345=690
5x408=2040
bxc
2x134=268
3x345=1035
2x408=816
axbxc
4x2x134=1072
2x3x345=2070
5x2x408=4080
ex 11)
a=50+9:9-45
a=50+1-45
a=51-45
a=6
b=3x(300-55x5)X2+3-(14:7-5x0)
b=3x(300-275)X2+3-(2-0)
b=3x25x2+3-2
b=75x2+3-2
b=150+3-2
b=153-2
b=151
c=35x2+45
atât este c,nu se vede in poza
