Question

what is constant and variable?​

Answer 1

Explanation:

Constant are the numbers whose value doesn't change.

And variable s are those whose value varied

Answer 2

Answer:

A constant is a value or number that never changes in expression; it’s constantly the same.

A variable is a quantity that may change within the context of a mathematical problem or experiment.

2y+5=10

here,

y is variable

5 and 2 are constant