Question

a)  3x-y =18
     x+y =10

b) 2x+y = -3
    x-3y = 26

c) x+5y = 24
    3x-2y = 4

d) x+y = 32
    x-y = 18

e) 6x-3y = 20
    4x+3y= 40

f) 8x+5y = 11
   4x+5y = 3

g) 2x-3y = 11
    2x+7y = 1

h) 7x+6y = 23
    5x+6y = 21

Answer 1

a) 1-x=10-y

2- 3(10-y)=18
  30-3y=18
  3y=30+18
  3y=42
  y=42/3
 y=16


3- x+16=10
   x=10-16
   x=-6