Fill in the blanks :

`-16/7 + x = x + ( -16/7 ) = -16/7`

Fill in the blanks : 16 + (-16) = …………

C(16,7)=

7x - 2y = 3 , 22x - 3y = 16 .

Fill up the blanks: (i) (x,y) = (3, ..), (....,7), (8, 16), (9, ...), (...., 10), (1, 2) (ii) (x,y) = (....,6), (8,3), (12, ...), (16, 3/2), (....,3/4), (48,....)

(-7) + (-9) + 12 + (-16) = ?

Find the coefficient of x in the expansion of (1 - 3x + 7x^(2)) (1 - x)^(16) .

Fill in the blanks: 42 times 16=40 times 16+"_______" times 16

7 8 16 43 ? 232

7 10 16 28 52 ? 196