Question

check wheather 21,3,35,5 are proportion or not​

Answer 1

Answer:

21:3::35:5 yes

Step-by-step explanation:

21×5=3×35

yes

Answer 2

Answer:

There is another way to determine whether a proportion is true or false. ... Then multiply the denominator of the first ratio by the numerator of the second ratio in the proportion. If these products are equal, the proportion is true; if these products are not equal, the proportion is not true.