Respuesta :

apologiabiology
solve for what w represents
7/9w means 7/9 times w
w is unknown so we try to find w

7/9w=7
multiply both sdies by 9/7 to clear fraction
7/9 times 9/7 times w=7 times 9/7
63/63 times w=9 times 7/7
1 times w=9 times 1
w=9