Question 114194

{{{7(y + -7) = 9y -49}}}}....multiply terms on the left

{{{7y  - 49 = 9y -49}}}....move {{{7y}}} to the right and {{{-49}}} to the left

{{{- 49 + 49 = 9y -7y}}}

{{{0 = 2y}}}

=> {{{y = 0}}}