Answer:
Linear: 3x +9 =2x
Non Linear: x+2y=1 and x = y
If you convert the fractions to improper, you get 9/2 times 7/4. you can then just multiply the tops and bottoms and simplify! hope this helps
(b) 40 * = 40 * = 8
(c) 360 - (72 + 144 + 81) = 360 - 297 = 63
(d) =
That answer would be 600,000 I think