Question

daca a+b=40 b+c=30 si a+c=30 cat e a,b si c

Answer 1

a+b=40+
b+c=30
a+c=30
_______
2a+2b+2c=100/÷2
a+b+c=50
40+c=50
c=10
a+30=50
a=20
30+b=50
b=20

Answer 2

a+b =40
b+c=30
a + c=30
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2a+2b+2c=100
2(a+b+c)=100
a+b+c=50




SPER CA TE-AM AJUTAT