Question

metodo de igualacion
7x-3y=5
4x+3y=17​

Answer 1

despejamos:

x=(5+3y)/7

x=(17-3y)/4

igualamos

(5+3y)/7=(17-3y)/4

4(5+3y)=7(17-3y)

20+12y=119-21y

33y=99

y=3

coronita :)