Answer:
3x - 2y = 10
Explanation:
We are given that the sum of two numbers is 0 and twice the smaller number subtracted from 3 times the larger number is 10.
Assuming x to be the large number and y to be the smaller number we can write an equation to represent this.
Sum of two numbers is 0:

Twice the smaller number subtracted from 3 times the larger number is 10:
