If EFG and GFH are a linear pair, then both of the angles added must be equal to 180 degrees. Since they must be added to = 180, you would add them as so: 4n + 23 + 2n + 13 = 180 - Combine like terms to get: 6n + 36 = 180 - Now, simply solve! - - Subtract 36 from both sides to get: 6n = 144 - Divide 6 from both sides to get the variable by its self: 6n / 6 = n 144 / 6 = 24 - Thus, n = 24 - To check your work, fill 24 for 'n' in the equations. 4(24) + 23 = 119 2(24) + 13 = 61 119 + 61 = 180 - Correct!
