Question 430179
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Hi
c-5d=2
2c+d=4      |checking our Answer  2*2+0 = 4

-2c+10d=-4
  2c+d= 4 
    11d = 0
      d = 0 and c = 2  (c = 2+5*0)

y=2x+3
y=4x-1      |checking our answer 7 = 4*2-1
 2x+3 = 4x-1
    4 = 2x
    2 = x and y = 7  ( 2*2+3)