7 x 4 = 28 4 x 7 = 28 1 x 28 = 28 28 x 1 = 28 Those are the only whole numbers you can multiply to get 28.
3
28 x 4 = 112
Combinations of such integers are: 1 x (-28) = 28 2 x (-14) = 28 7 x (-4) = 28 14 x (-2) = 28 (-1) x 28 = 28 (-2) x 14 = 28 (-7) x 4 = 28 (-14) x 2 = 28
6x = 28 - x (just replace x with 4) 6(4) =? 28 - 4 24 =? 28 - 4 24 = 24 True So that 4 is a solution of the given equation.
7 x 4 = 28 4 x 7 = 28 1 x 28 = 28 28 x 1 = 28 Those are the only whole numbers you can multiply to get 28.
3
28 x 4 = 112
28 = 1 x 28, 2 x 14, 4 x 7, 7 x 4, 14 x 2, 28 x 1
1 x 28, 2 x 14, 4 x 7, 7 x 4, 14 x 2, 28 x 1
4 because:- a = missing factor 4 x 7 x a = 28 x 4 28 x a = 112 a = 112/28 a = 4
Combinations of such integers are: 1 x (-28) = 28 2 x (-14) = 28 7 x (-4) = 28 14 x (-2) = 28 (-1) x 28 = 28 (-2) x 14 = 28 (-7) x 4 = 28 (-14) x 2 = 28
1 x 28, 2 x 14, 4 x 7, 7 x 4, 14 x 2, 28 x 1
Divide 28 by 1, 2 and 4. 1, 2, 4, 7, 14, 28
28 = 4 x 7 so 4 = 1 seventh of 28 6 x 4 will therefore = 6 sevenths of 28, and as we know, 6 x 4 = 24
1 x 28, 2 x 14, 4 x 7, 7 x 4, 14 x 2, 28 x 1.
6x = 28 - x (just replace x with 4) 6(4) =? 28 - 4 24 =? 28 - 4 24 = 24 True So that 4 is a solution of the given equation.