Question

5x-2y=31 4x+3y=11 y 5 x -6y=21 x-2y =5 ayuda plis porfavor es para ahorita

Answer 1

5x -2y =31
4x +3y = 11

x= 31 + 2y/ 5

x = 11-3y / 4

31+ 2y/ 5 = 11-3y/4

4( 31 + 2y) = 5(11-3y)
124+ 8y= 55-15y
8y + 15y = 55-124
23y = -69
y = -69/ 23
y = -3

4x + 3 (-3) =11
4x = 11 + 9
4x = 20
x= 5