Question

X-2=7 by trial or error methodX-2=7 solve by trial or error method

Answer 1

Answer:

the answer is 9;

Step-by-step explanation:

because as u can see that X-2=7

LHS:

shift (-2) to the RHS i.e

X=7+2

X=9

hence proved.

verification:

9-2=7

Answer 2

Step-by-step explanation:

X -2 = 7

LET'S CHANGE NUMBERS TO GET RESULT AS 7

3-2 = 1 IS WRONG

4-2=2 IS WRONG

5-2 = 3 IS WRONG

6-2=4 IS WRONG

7-2 = 5 IS WRONG

8-2 = 6 IS WRONG

9-2 = 7 IS CORRECT

SO X IS 9