You multiple -7 by whats in the parentheses
(A negative number multiplied by a positive equals a negative number)
You then add 21 to each side in order to isolate the "x" or "-7x" by doing the opposite of the number which is -21
Combine the like terms
Now divide the number 35 by -7x (numbers are divided by "x")
35 divided by -7=-5
35÷-7=-5
Answer:
I think you forgot to include the model
Good luck:)