7n - 4 = 31

n = ?

Sorry for askin so many questions im just trynna get all of my work done on khan academy

7n - 4 = 31

move - 4 to the other side

sign changes from - 4 to + 4

7n-4+4 = 31+4

7n = 31+4

7n = 35

divide both sides by 7 to get n by itself

7n/7 = 35/7

cross out 7 and 7, divide by 7 and then becomes 1*1*n = n

n = 35/7

answer:

n = 5