Question

Sistemas linearies
Resolva

3x+2y=5

2x+3y=4

Answer 1

Resposta:

Explicação passo a passo:

3x+2y=5 (2)

2x+3y=4 (-3)

"6x+4y= 10"

" -6x-9y= -12(+)"

-------------------

" -5y= - 2 "

y = "2/5"

"3x + 2y=5 "

"3x+2.2/5 =5"

"3x+4/5 = 5 "

"(5.3x+4)/5=5.5/5"

"15x+4= 25 "

"15x=25-4"

15x=21

x = 21/15(:3)/(:3)

x = "7/5"