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
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
1/4 x 21 = 5.25.
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
Oh honey, you want the times table of 21? Well, buckle up buttercup because here it is: 21 times 1 is 21, 21 times 2 is 42, 21 times 3 is 63, and so on. Just keep adding 21 each time and you'll have the whole shebang.
((1/3) x 4 )/21 = (4/3)/21 = 4/63
84
742 multiplied by 4 is 2,968.
17
I think one or both of those have to be negative. -3 + 7 = 4 -3 x 7 = -21 3 + -7 = -4 3 x -7 = -21 7 x 3 = 21 7 - 3 = 4 It also works if you subtract.
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