M-9=21
M=30
Is what I got
Right!
Thanks
To verify your answer, let's first substitute the value of M into the equation M - 9 = 21:
30 - 9 = 21
Now, let's solve the equation:
30 - 9 = 21
21 = 21
Since the equation is true, it means that your solution of M = 30 is correct. Well done!