Page 57 - 091math-wb-w6-(equations&inequalities-1)

Workbook


2 x 1  m 
x
29) If  , then express 18 in terms of m and n .
3 x 1  n 


y
30) If x , y Z and 2 x y 1   5 2 yx  4 , then what is the value of x ?

7
31) If 2 x  3 9  2 x  3 , what is the sum of possible values of x ?

2  2 x 15
x
32) If  , then what is the value of x ?
2  2 x 17
x

5 a b 5 b a
33) Simplify  .
5 b a  5 a b 5 a b  5 b a

z
34) If 2  10 3 , y  90 and 5  120 , then write x, y and z in descending order.
x

57 091math-wb-w6-(equations&inequalities-1)