Question

6x - 12y = 15
2x - 4y = 6

Answer 1

Refer to the attachment

Answer 2

No solution.

given:

• 
  `\sf 6x - 12y = 15`

• 
  `\sf 2x - 4y = 6`

make x the subject in equation 2:

`\hookrightarrow \sf 2x = 6+4y`

`\hookrightarrow \sf x = (6+4y)/(2)`

insert this in equation 1:

`\hookrightarrow \sf 6((6+4y)/(2)) - 12y = 15`

`\hookrightarrow \sf 3(6+4y}) - 12y = 15`

`\hookrightarrow \sf 18+12y - 12y = 15`

`\hookrightarrow \sf 18 = 15`

`\circle \bold \mathrm{\sf \The\:sides\:are\:not\:equal}`

y cancels out, thus no solution.