For each value of U, determine whether it is a solution,

u/7 + 1=7

28, yes or no?

-49, yes or no?

42, yes or no?

0, yes or no?

Given u/7 - 1 = 7 and plugging in values for u,

For u = 28; 28/7 - 1 = 4 - 1 = 3; No

For u = - 49; - 49/7 - 1 = - 7 - 1 = - 8; No

For u = 42; 42/7 - 1 = 6 - 1 = 5; No

For u = 0; 0/7 - 1 = - 1; No

Another way to find out which value would be a solution to u/7 - 1 = 7 is to solve for u.

u/7 - 1 = 7

u/7 = 7 + 1

u/7 = 8

u = 8*7

u = 56

The only solution to this equation is when u = 56.