Question

If three times a number is decreased by 5, the result is 7. Find the number.

IS THIS RIGHT ?

3x -5 = 7
+5 +5
__________

3x = 12
___ ____
3 3

x=4


IS THIS CORRECT

Answer 1

That's correct.

Answer 2

You can always do a simple check of your answer, without redoing the derivation.

3x4 - 7 = 5.

Therefore, your answer is correct.

Answer 3

thanks