Question

Find the missing number so that the equation has no solutions.
5x + 7 = ?x + 5

Answer 1

Answer: 5

Explanation:

If the missing number is 5 we can write the equation

5x + 7 = 5x + 5

Subtract by 5x on both sides

7 = 5

7 does not equal have so we know it has no solutions.