Răspunsuri

2014-10-22T20:28:28+03:00
A. 3×12-3×2=3(12-2)=3x10=30
b. 4×23+4×11 =4(23+11)=4x34=136
c. 7×49+7×31-7×50=7(49+31-50)=7x30=210
2014-10-22T20:29:25+03:00
3(12-2)=3*10=30
4(23+11)=4*34=136
7(49+31-50)=7*30=210