Sagot :
29 is the answer.
Explanation:
Let x be the number.
-9 + x = 20
x = 20 + 9
x = 29
Let's do the checking.
-9 + x = 20
-9 + (29) = 20
20 = 20
Therefore, the solution is true.
Explanation:
Let x be the number.
-9 + x = 20
x = 20 + 9
x = 29
Let's do the checking.
-9 + x = 20
-9 + (29) = 20
20 = 20
Therefore, the solution is true.