Question

Se dau numerele : a=3×2 ; b=3×4+1 ; c=5×9-20 .Calculeaza:2÷a+b+c; c-b+3×a-b-c.​

Answer 1

a=3•2

a=6

b=3•4+1

b=13

c=5•9-20

c=25

2÷a+b+c=44

2÷(6+13+25)=44 (aici se putea pune decât paranteza ca altfel nu se putea calcula)

c-b+3•a-b-c=

25-13+3•6-13-25=

25-13+18-13-25= -8