Question

Dacă a×b=45 , iar c×a=35, calculati:
1) a×(b+c):8 2) a×(b-c):2
Dacă a×b=36, iar c×a=12,calculati:
1) a×(b+c):6 2) a×(b-c):4
Folositi o proprietate a înmulțirii

Answer 1

Răspuns:

1.(a×b+a×c)÷8=(45+35)÷8=80÷8=10

2.(a×b-a×c)÷2=(45-30)÷2=10÷2=5

1.(a×b+a×c)÷6=(36+12)÷6=48÷6=8

2.(a×b-a×c)÷4=(36-12)÷4=24÷4=6

sper ca te-am ajutat....

Answer 2

1) a×(b+c):8=

=(a×b+a×c):8=

=(45+35):8=

=80:8=10

2) a×(b-c):2=

=(a×b-a×c):2=

=(45-35):2=

=10:2=5

1) a×(b+c):6=

=(a×b+a×c):6=

=(36+12):6=

=48:6=8

2) a×(b-c):4=

=(a×b-a×c):4=

=(36-12):4=

=24:4=6