What answer this?

-7 =15

Please Answer this question ​

22 - 7 = 15

Step-by-step explanation:

Let the number in the blank be x.

The equation will be →

Now, solve the equation.

∴ So, the number in the blank is 22.

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10