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-21*3/4 = -63/4 = -153/4 or -15.75
17 x 21 = 357
0.6667
1,050
21 multiplied by 8 is 168.
21X13=273
-32/21
-21
21
2/21
4/21 or 4 over 21 because 1x4 is 4 and 7x3 is 21
-5 + √21 ≈ -0.4174 -5 - √21 ≈ -9.5826
It is 2.1 or 21 over 10
8/21
10/21 or ten over twenty-one
21 over 72, or 7 over 24 (simplified)
It's 21/5 or 4.2.