Find the values of
P(7,4)

Find the value of : (-7) + (-9)+4+16

Find the value of: (-7)+(-8)+(-90)

Find the value of: (-7)-8-(-25)

Find the value of x , if (x - 3) + (x + 4) = 7

Find the value of x , if x = -4/3 + 8/7

Find the value of x , if x = 7/4 - 17/8

Find the value of r, if (i) .^(11)P_(r)=990 (ii) .^(8)P_(5)+5*^(8)P_(4)=^(9)P_(r)

Find the values of p so that the lines (1-x)/3 = (7y-14)/2p = (z-3)/2 and (7-7x)/3p = (y-5)/1 = (6-z)/5 are at right angles.