Hey there!!
First step we will need to take is to solve the distributive property.
We will solve 3 ( c - 5 )
= 3c - 15
The total equation :
3c - 15 = 7c + c
Combine the like term on the right side of the equation :
3c - 15 = 8c
Subtract 3c on both sides
-15 = 5c
Divide by 5 on both sides
-3 = c
The value of c is equal to -3
Hope my answer helps!!