21/25 times 550 = 462
8/9 × 15/28 × 21/25 = (8×15×21)/(9×28×25) = 2520/6300 = (2×1260)/(5×1260) = 2/5
(10/21) x (-7/25) = -70/525 = -2/15
22/25
25 times 21 equals 525
Half of (21 over 25) = 1/2 * 21/25 = 21/50 = 0.42
550 minus 25% = 549.75 . 412.5 is 25% less than 550 .
550 x .25 = 137.5
21⁄25 = 0.8421 over 25 to a decimal = 0.8421/25:= 21 ÷ 25= 0.84 in decimal
21 over 25 is 84%
21/25 = 42/50
21/25 = 84/100 = 0.84 21 divided by 25 = 0.84
21/25 − 2/5 = 11/25