The equation is .              

\

According to Subtraction property of equality: if a = b, then .

                  (Subtract 1 from each sides).

                                          (Additive inverse property: )

                                     (Subtract: )

\ \

According to multiplication property of equality:

For any number a, b and c, If a = b then ac = bc.

                          (Multiply each side by 7)

                                  (Cancel common terms)

 m = 56                                    (Multiply: )

Check:

To check the solution, substitute m = 56 in original equation. 

                                   (Divide: )

9 = 9                                         (Add: 1 + 8 = 9) \ \

Compare the values, the equation is true.

The value of m = 56.