Question

{5х+4=15
{3х+4у=26
!!!!!!!!!!!!!!!!!?? ​

Answer 1

Ответ:

{5х+4=15

х=9х=15

х=15-9

{6+5+4=15

{3х+4у=26

х=7х=26

х=26-7

х=19

{19+3+4=26