Question

Please answer it with working

Answer 1

Answer:

8

Step-by-step explanation:

x+7=15

x=15-7

x=8

To show that other values do not work with this equation, you can replace the values in the equation in the place of x

For example:

x+7 = 15

@x=2

2+7 = 15

Since this is an impossible event, as 2+7 = 9, hence 2 cannot be the value of x.

Similarly, you can do for the others as well

Hope it helps

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Answer 2

Step-by-step explanation:

Equation:-

x + 17 = 15

☆ Checking, x as 8

8 + 17 = 15

25 is not equal to 15.

☆ Checking , x as -8

-8 + 17 = 15

9 is not equal to 15.

☆ Checking, x as 0

0 + 17 = 15

17 is not equal to 15.

☆ Checking, x as 2

2 + 17 = 15

19 is not equal to 15.

hope it will help. you