Question

numerele a si b sunt invers proportionale 5 si 8 .daca a+b=26 ayunci    determinatinumerele a si b

Answer 1

5a=8b⇒a=8b/5
a+b=26⇒8b/5+b=26⇒13b/5=26⇒13b=130⇒b=10
a=8b/5⇒a=16