Question

a+b+c=68 a+4=b÷3 a+4=c÷4

Answer 1

Răspuns

Explicație pas cu pas:

a+b+c=68

a+4=b:3 => b = 3a+12

a+4=c:4 => c = 4a+16

a+b+c = a+3a+12+4a+16 = 68

=> 8a = 68-28 => 8a = 40 => a = 40:8 => a = 5

b = 3·5+12 =15+12 => b = 27

c = 4·5+16 = 20+16 => c = 36

a+b+c = 5+27+36 = 68 , corect