Multiply each equation by a constant that would to eliminate the y terms.

2 x minus 5 y = negative 21. 3 x minus 3 y = negative 18.

what are the resulting equations?
6 x minus 15 y = negative 63. negative 15 x + 15 y = 90.
6 x minus 15 y = 63. negative 15 x + 15 y = 90.
6 x minus 15 y = negative 63. negative 15 x + 15 y = negative 90.
6 x minus 15 y = negative 63. negative 15 x + 15 y = 90.