-4x - 7 = 16 -4x = 16 + 7 -4x = 23 x = -23/4 x = -5.75 Check: -4(-5.74) - 7 = 16 23 - 7 = 16 16 = 16
7/16 - 4/16 = 3/16
lcm(4, 7, 16) = 112
7/16 - 1/4... Make the 1/4 into 16ths by multiplying BOTH numbers by 4 - You now have... 7/16 - 4/16 which is 3/16
(4/5)/(16/7) = (4/5)x(7/16) = 28/80 = 7/20
4/7
Assuming the numbers are 51/4 and 22/7: (51/4) / 22/7) = (21/4) / 16/7) = (21/4) * (7/16) = (21*7) / (4*16) = 147/64
1.75
7*40+16/4-2=282
7 over 16.3/4 x 4/4 = 12/1612/16 - 5/16 = 7/16
49/16 = (7^2)/(4^2) = (7/4)^2 = ((4/7)^-1)^2 = (4/7)^-2 Thus as (4/7)^2 = 49/16 and 49/16 = (4/7)^-2 (4/7)^x = (4/7)^-2 Therefore x = -2.
7