Question

x+y=35  

2x-3y=-5

Obrigado pela ajuda..'

Answer 1

x+y=35   >>> x=35-y
2x-3y=-5

2(35-y)-3y=-5
70-2y-3y=-5
-5y=-5-70
y=-75/-5
y=15

Se x=35-y
então x=35-15
x=20

Answer 2

 
 
 

x+y=35   (3)
2x-3y=-5


3x+3y=105   
2x-3y=-5
     5x = 100
      x = 20

y = 35 - x ==> y = 35 - 20 ==> y = 15