Question

Aflati doua numere reale stiind ca suma lor este 500 iar diferenta lor este 34

Answer 1

x+y=500 
x-y=34
x=500-y
500-y-y=34
-2y=34-500
-2y=-466
y=466/2=233
x+233=500
x=500-233= 267

Verificare:
233+267=500
267-233=34

Answer 2

a+b=500⇒a=500-b
a-b=34⇒500-b-b=34⇒500-2b=34⇒2b=500-34⇒2b=466⇒b=466÷2⇒b=233

a+b=500⇒a+233=500⇒a=500-233⇒a=267