To solve this, you need to isolate/get the variable "n" by itself in the equation:
132 = 3(5n + 4) First divide 3 on both sides
[tex]\frac{132}{3}=\frac{3(5n+4)}{3}[/tex]
44 = 5n + 4 Subtract 4 on both sides
44 - 4 = 5n + 4 - 4
40 = 5n Divide 5 on both sides to get "n" by itself
[tex]\frac{40}{5} =\frac{5n}{5}[/tex]
8 = n
PROOF
132 = 3(5n + 4) Substitute/plug in 8 into "n" since n = 8
132 = 3(5(8)+4)
132 = 3(40 + 4)
132 = 3(44)
132 = 132
