Question

Diferenta a doua nr.este 4.iar suma jumatatii lor este 6.aflati nr

Answer 1

A-b=4 => a=4+b
A:2+b:2= 6
a/2+b/2=6
Aducem la numitor comun 2 amplificam 6 cu 2
=> a+b=12
Din relatia de sus avem a=b+4
=> b+4+b=12
=> b+b=12-4
=> b+b=8
=> b=8:2=4
=> a=4+4=8

Answer 2

a - b = 4 ==> a = b + 4
a : 2 + b : 2 = 6 |× 2
a + b = 12

a /--------/+4
b /--------/

12 - 4 = 8
8 : 2 = 4 (un segment egal)

a = 4 + 4 = 8
b = 4