Question

Please help me ASAP!!

Answer 1

I don't like these computer choice thingies. It detracts from the math.

$-x - 2y = 7$

$5x - 6y = -3$

If we want to eliminate x we multiply the first equation by 5 then add it to the second:

$-5x - 10y = 35$

$5x - 6y + (-5x - 10y) = -3 + 35$

$-16y = 32$

OK, that's how it's done. Reading through the choices, that's choice D.