Answer:
The answer is
5x+10=40
5x=30
x=6
x = 6
Explanation:
We know that the sum is 40.
Something times 5 + 10 = 40.
To make it easier, I'll go ahead and subtract the 10.
40 - 10 = 30
Now we ask, 5 times what (x) equals 30?
5 times 6 = 30
Therefore, x=6
