7 2 4 n 8 July 8, 2019 16 32 64 128 Left 7 2 right 4 = n 8 7 2 right 4 = n 8 Solve for n 7 2 4 n 8 3n 8 7 2 n 4 10 8 4 7 2 n 1 2 3 4 7 8 n terms 2 7-4 8 2-4 7 2 n 7