Question

a÷b=5r.24 c=a÷2 a+b+c=257.sa se afle a,b,c ?problema e de clasa a4a

Answer 1

a:b = 5 r 24 => a = 5b + 24
c =a:2 => c = (5b + 24): 2
a + b + c = 257 =>
5b + 24 + b + (5b + 24):2 = 257 =>
6b + 24 + (5b + 24):2 = 257 /(*2) =>
12b + 48 + 5b + 24 = 514 =>
17b + 72 = 514 =>
17b =442 =>
b = 442:17 =>
b = 26
a = 5*26 + 24 = 130 + 24 = 154
c = 154: 2 = 77