(-2)-1=(-1)
21 and 21 equal 42.
37
21 + 21 = 42.
fractions which are equal to 21 = 21/1, 42/2, 63/3,...
21%
21
3x7 = 21
2 / 21 is equal to 0.0952380952380952380952380952381(0.095)
About 8.3 inches.
21 7
1 x 21 3 x 7 7 x 3 21 x 1
To find the addition that doubles to equal 21, you can divide 21 by 2, which gives you 10.5. This means that the two equal additions are 10.5 and 10.5. Therefore, 10.5 + 10.5 = 21.