Помогите пожалуйста прошу вас номер 7

1. 60:15*9-28=8      2. 27*3:9+18=27     3.  29*3-16-45=26       4. 48:16+59-16=46    60:15=4                 27*3=81                     29*3=87                     48:16=3    4*9=36                   81:9=9                       87-16=71                   3+59=62    36-28=8                 9+18=27                    71-45=26                   62-16=46 5. 90-14*2+17=79           6. 57+10*3-48=3914*2=28                              10*3=3090-28=62                             57+30=8762+17=79                            87-48=39