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a fost răspuns

Exefectuati factorul comun si efectuati:
a)17x12+17:18
b)45x22+22x55

c)24x156+24x31_24x87
d)511x22+489x22. e)67x377+377x33
f)12x13_13x2+13x90

Răspuns :

Mrazvy1
a) 17(12+18)=17*30=510
b). 22(45+55)=22*100=2200
c). 24(156+31-87)=24*100=2400
d). 22(511+489)=22*1000=22000
e). 377(67+33)=377*100=37700
f). 13(12-2+900=12*100=1200

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