Question

У = 3х – 8
(6х + Зу = -9

Answer 1

y = 3x - 8 ---- i

6x + 3y = -9

=>6x +3 (3x-8) = -9 (substituting y= 3x-8)

=> 6x + 9x - 24 = -9

=> 15x = 24 -9

=> 15x = 15

=>
`\red{\bold{\large{ x= 1}}}`

Now substituting x = 1 in equation i,

y = 3 × 1 -8

=> y = 3 -8

=>
`\red{\bold{\large{ y= -5}}}`