Solve for X an Y in the following problem: a. X + Y=6 , 2X + Y = 8

Solve for X an Y in the following problem:

a. X + Y=6 , 2X + Y = 8

b. 7X + 3Y = 14 , 5X + 9Y = 10

c. 4X + Y = 16 , 2X + 3Y = 24

d. 12X + Y = 25 , 8X – 2Y = 14