a ) ( x - 12 ) x 105 = 0

x - 12  = 0  : 105

x - 12 = 0

x = 0 + 12

x = 12

b ) 47 x ( 27 - x ) = 47

27 - x = 47 : 47

27 - x = 1

x = 27 - 1

x = 26

c ) 2x + 69 x 2 = 69 x 4

2x + 138 = 276

2x = 276 - 138

2x = 138

x = 138 : 2

x = 69

d ) 2x - 12 - x = 0

2x - x = 0 + 12

x = 12

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

Mr Lane urged any parents who have concerns about the disease to seek medical help at once.

A. immediately

B. right way 

C. forthwith 

D. in due course