3.14/54.389
8x . 2y
8x x 7y
solve using elimination method
-4x + 3y = 3
-4 + 3y = 7
8x + 7y
12.4/14.33
3mn³ x 2m²n²
-4x +3y = 7
solve using method
4x²+9y²=12xy, x:y=?