Answer:
[tex]u = 8[/tex]
Step-by-step explanation:
The steps are not shown. So, I will solve from scratch
Given
[tex]7(u -5) = 21[/tex]
Required
Solve, with steps
[tex]7(u -5) = 21[/tex]
Apply distributive property
[tex]7u - 7 * 5 =21[/tex]
[tex]7u - 35 =21[/tex]
Collect like terms
[tex]7u = 35 + 21[/tex]
[tex]7u = 56[/tex]
Divide both sides by 7
[tex]\frac{7u}{7} = \frac{56}{7}[/tex]
[tex]u = 8[/tex]
