Question

5. Daca a×b=45,iarc×a=35,calculati respectând ordinea efectuarii operatiilor:
A)a×(b+c)+60=
B)a×(b-c)×3=
Daca a×b=36,iar c×a=12,calculați
C)a×(b+c)+72=
D)a×(b-c)-6=


6. La un restaurant sunt 9 mese a câte 8 locuri si 7 mese a cate 10 locuri.
Cate persoane pot lua masa la acel restaurant

Answer 1

5.
A) a×b+a×c=45+35=80.
B) (a×b-a×c)×3=(45-35)×3=10×3=30.
C) a×b+a×c+72=36+12+72=120.
D) a×b-a×c-6=36-12-6=18.

6.
9×8+7×10=72+70=142 de persoane.