Every month, Tony makes $1600 plus a 9% commission on sales. If her sales last month were $18,400, what was her total pay? pls show work

45 is the only number in both sets

You move the constant to the right side and change its sign to be 9z= -6 -8. that’s the first step.the second step would be calculate the difference of -8-6 to get -14. you equation should now be 9z=-14the last step is to divide both sides by 9 to get z=-14/9hope this