1) 28:(x/16-4) = 728 = 7(x/16 - 4)28 = 7x/16 - 2828 + 28 = 7x/1656 = 7x/1656 * 16 = 7x896 = 7xx = 896 / 7x = 128
2) 512:(x6-2) = 2512 = 2(x6 - 2)512 = 2x*6 - 4512 = 12x - 4512 + 4 = 12x516 = 12xx = 516 / 12x = 43
1) 28:(x/16-4) = 7
28 = 7(x/16 - 4)
28 = 7x/16 - 28
28 + 28 = 7x/16
56 = 7x/16
56 * 16 = 7x
896 = 7x
x = 896 / 7
x = 128
2) 512:(x6-2) = 2
512 = 2(x6 - 2)
512 = 2x*6 - 4
512 = 12x - 4
512 + 4 = 12x
516 = 12x
x = 516 / 12
x = 43