10 4 x 5 2 x 3 20 July 8, 2019 16 32 64 128 10 5 / 21 = 4 x / 20 4 5/23+x=10 2/23 10 5 x 4 10 5÷21=(4x)÷20 5 * 4 ^ x + 3 * 10 ^ x = 2 * 25 ^ x
