Answer:
x=3 y=2 (3,2)
Step-by-step explanation:
200x + 300y = 1200(-1)
100x + 400y = 1100(-2)
-200x - 300y = -1200
200x + 800y = 2200 (x's cancel)
500y = 1000 (divide by 500)
y = 2 (plug in 2 for y in on of the equations) *best to use the easiest equation*
200x + 300y = 1200
200x + 300(2) = 1200
200x + 600 = 1200 (subtract 600 from both sides)
200x = 600 (divide by 200)
x = 3
