Question

solve by Elimination Method : 3x-4y=7 , x+2y=6​

Answer 1

$3x - 4y = 7...(1) \\ x + 2y = 6...(2) \\ 3(x + 2y) = 3 \times 6 \\ 3x + 6y = 18...(3) \\ (1) - (3) \implies - 4y - 6y = 7 - 18 \\ \implies \: y = \frac{11}{10} \\ putting \: the \: value \: of \: y \: in \: (1) \\ 3x - 4. \frac{11}{10} = 7 \\ 3x = 7 + \frac{44}{10} \\ 3x = \frac{114}{10} \\ x = \frac{114}{30} \\ x=\frac {57}{15}$