Problem
Evaluate. 7(n + 5) = (7 x 4) + (7 x 5)
Solution
For this case we can distribute the terms in the left
7n +35 = 28 +35
And we can subtract 35 in both sides and we got:
7n = 28+35-25= 28
7n =28
And dividing both sides by 7 we got:
n = 28/7 = 4
And then the solution for this case would be:
n=4