In order to solve the following system of equations by addition, which of the following could you do before adding the equations so that one variable will be eliminated when you add them?
4x-2y=7
3x-3y=15
a. multiply the top equation by 3 and the bottom equation by 4
b. multiply the top equation by 3 and the bottom equation by 2
c. multiply the top equation by -3 and the bottom equation by 2
d. multiply the top equation by 1/3.

Of the 50 us states 4 have names that start with the letter w

Determine if this is a solution to the system

Myra took a picture of the sky one afternoon when two jet airplanes appeared to draw a pair of parallel lines with their vapor trails. the vapor trails from two other jets flying from another direction crossed over the parallel trails. she printed her picture and labeled the angles and lines. assume lines c and d are parallel and 2 measures 98°. which statements are true? check all that apply. 3 = 6 = 98° 3 = 14 = 98° 4 = 8 = 82° 4 = 12 = 82° 5 = 8 = 82°