Answer:
C
Step-by-step explanation:
You add both types of tomatoes together to get the total amount of tomatoes
X=25
Remove parentheses
7x - 5x - 40= 10
Merge the similar terms
2x - 40= 10
Constantly move to the right side and change characters
2x = 10 + 40
Addition
2x = 50
Divide both sides of the equation by 2
x = 25