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100 plus 21 is equal to 121. This is a basic addition operation where you are combining the two numbers together to find the total sum. In mathematics, addition is a fundamental arithmetic operation that represents combining two or more numbers to get a total quantity.
37
21 and 21 equal 42.
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)
21 cm is equal to 0.21 meters.
21 7
1 x 21 3 x 7 7 x 3 21 x 1