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7*46 = 7*(40 + 6) = 7*40 + 7*6 = 280 + 42 = 322
You multiply the outside number touching the parenthesis by the numbers inside. Ex: 6(x - 5) = 42 6x - 30 = 42 6x = 72 x = 12
42*23 = (40+2)*(20+3) = 40*20 + 40*3 + 2*20 + 2*3 = 800 + 120 + 40 + 6 = 966
fraction of 42 is 28 = 28/42 or 2/3
28/42 x 100 = % Answer = 66.66666 recurring % = 67%