Question

Solve the simultaneous equation 3x-2y=6 and 2x+y=11

Answer 1

$\huge\bold\green{ solution }$

$3x - 2y = 6 - - (1) \\ 2x + y = 11 - - (2)$

equation (2)×2

$3x - 2y = 6 \\ 4x + 2y = 22$

____________________

$7x = 28 \\ \\ x = \frac{28}{7} \\ x = 4$

X= 4 put in equation (2)

$2x + y = 11 \\ \\ 2 \times 4 + y = 11 \\ \\ 8 + y = 11 \\ \\ y = 3$