The answer should be A=-6
1 and 19, 19 is a prime number.
Answer:
Natural numbers are the counting numbers, meaning that they make up the set {1,2,3,4,5,...} So , 4/5 is belong to natural number
Rename four and one fourth when subtracted from three fourths because when you subtract the fractions you get a different fraction for your answer.
4 1/4 - 3/4 = 3 1/2
so it's three and one half instead of four and one fourths!
Hope I helped! ( Smiles )