Question

what is x and y used in mathematics
am so confused of this two characters used in mathematics

example : 2x + 4y = ???
please I need help​

Answer 1

Step-by-step explanation:

These are variables that is they can take any value. So they are used in a particular equation to find the value so that the equation is satisfied (means the left hand side and right hand side are equal). Even other variables like a,b, o, z, etc can also be used but most often the variables 'x and y' are used.

Answer 2

Answer:

$= 22 + 01 \times 22 \div ..15.0563 = 22.. - {12}^{?}$