Question

2 X + 3 Y equal to 9
, 4 x + 9 Y equal to 18 solve the equation by cross multiplication​

Answer 1

× / (9 x -9) - (3 × -18)

= ×/ -81 - ( - 54)

= ×/ -27

y/ (-9 × 4) - (-18 × 2)

= y/-36 + 36

=y/0

1/ 2 × 9 - 3 × 4

= 1/ 18 - 12

1/ 7

×= 27 / 7

= 3

y= 0

× =