21 x 4 = 84
x/4 + 5 = -1 (4)x/4 +(4)5 = -1 x+20 = -1 -20 -20 x= -21 x= -21
4 x 21 = 84 = (8 x 10) + (4 x 1)
x-3-7x=21 -6x=21+3 6x=-24 x=-4
Factor pairs of 84 are: 2 x 42, 3 x 28, 4 x 21, 6 x 84, 7 x 12
You have x+4=25 so you minus the four from four and you minus the four from the 25 . and then you get 21 so it is x=21
21 x 4 = 84
x/4 + 5 = -1 (4)x/4 +(4)5 = -1 x+20 = -1 -20 -20 x= -21 x= -21
4 x 21 = 84 = (8 x 10) + (4 x 1)
x2 + 8x - 5 = 0 ∴ x2 + 8x + 16 = 21 ∴ (x + 4)2 = 21 ∴ x + 4 = ± √21 ∴ x = -4 ± √21
x-3-7x=21 -6x=21+3 6x=-24 x=-4
((1/3) x 4 )/21 = (4/3)/21 = 4/63
84
Factor pairs of 84 are: 2 x 42, 3 x 28, 4 x 21, 6 x 84, 7 x 12
17
742 multiplied by 4 is 2,968.
You have x+4=25 so you minus the four from four and you minus the four from the 25 . and then you get 21 so it is x=21
To calculate ( 500' \times 21' \times 4 ), you first multiply 500 by 21, which equals 10,500. Then, multiplying that result by 4 gives you 42,000. Therefore, ( 500' \times 21' \times 4 = 42,000 ).