Question

Put the correct number in the box, so that the equation remains true.
(i) If 4x - 10 = 30 then 4x - 10 + 5 = 30 + ?​

Answer 1

Answer: 5

Step-by-step explanation:

4x - 10 = 30 -------1

Let the number we need to find be y.

4x - 10 + 5 = 30 + y

(4x-10) + 5 = 30 + y

From 1

30 +5 = 30 +y

y = 5