Question

Resolva a equaçao:
3×-y=0
-x+4y=22

Answer 1

∑ 3x - y = 22

0 - x + 4 y = 22

∑ 3x - y = 22

- x + 4y = 22

3x - y = 22

- 3 x +12y = 66

11y = 88

y=8

3x-8=22

x= 10

( x,y) = ( 10,8)

3x10 - 8= 0 - 10 + 4x 8 = 22

22 = 22 = 22

(x,y) = (10,8)