Question

Me ajudeem????
2(x-1)+y=7
x+3y=2


y=3x
x+4y=26

Answer 1

Ola Aleeh

1)

2*(x - 1) + y = 7 (I)
x + 3y = 2 (II)

de (I) vem
2x - 2 + y = 7
2x + y = 9

de (II) vem
-2x -6y = -4

de (I) + (II) vem
-5y = 5
y = -1

de (I) vem
2x - 1 = 9
2x = 10
x = 5

2)

y = 3x
x + 4y = 26 

x + 12x = 26
13x = 26

x = 2
y = 3x = 6

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