I use x, y, a and b, which is more convenient. The answer is as follows:

because

( 1)x—y+a+b= 10

(2)x×y—a+b= 10

(3)x÷y+a+b= 10

There are four unknowns in the question, but there are only three equations, which means you can't find all the answers at once, but it is said to be a number from 0 to 9, so there must be a small number of inferences:

From (1)(3), we can know that: x-y = x ÷ y (this is the key to solving problems),

Suppose y is 1, x÷y=x, not equal to x-y, so y is not equal to1;

Suppose y is 2 and x can only be equal to 4, yes;

Suppose y is 3, 3, 6, 9.

Assuming that y is 4, 8 is unacceptable;

So y can only be 2!

It is easy to understand here, because y=2 and x = 4；;

So:

( 1)4—2+a+b= 10

(2)4×2—a+b= 10

(3)4÷2+a+b= 10

So: a=3, b = 5；;

So: I × love × math × study =4×2×3×5= 120!

It's done. !