Question

VA ROG EXERCITIUL 25

Answer 1

(a+b+c)/2=56
a+b+c=112
b=2a
a=b/2
b=c-27
c=b+27
inlocuim
b/2+b+b+27=112
aducem la acelasi numitor care este 2
b+2b+2b+54=224
5b=224-54
5b=170
b=34
a=b/2=34/2=17
c=b+27=34+27=61

Answer 2

(a+b+c) : 3 = 56
b=2 a
b = c- 33
c= b+33
2a +33
a+b+c = 168
a+ 2a + 2a + 33 = 68
5 a + 33 =. 168
5a = 168-33
5a = 135
a = 135 • 5
de aici te descurci