Question

Encuentra dos numeros naturales cuya suma sea 6 y su diferencia 2

Answer 1

a + b = 6                                       

a - b  = 2

2a = 8

a=4

   entonces

4 + 2 = 6

4 - 2 = 2

Answer 2

x+y = 6
x-y = 2

x = 2+y

2+y+y = 6
2y = 6-2
2y = 4
y = 4/2
y = 2

x = 2+y
x = 2+2
x = 4