21 x 4 = 84
742 multiplied by 4 is 2,968.
17
2/3 x 4/7 = 8/21Multiply across: 2 x 4 = 8, 3 x 7 = 21As 8/21 can't be simplified further the answer is 8/21
4/21 x 100 = 19.047619 recurring (that is, 19.047619047..) percent
21 x 4 = 84
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 x 21 = 21 2 x 21 = 42 3 x 21 = 63 4 x 21 = 84 5 x 21 = 105 6 x 21 = 126 7 x 21 = 147 8 x 21 = 168 9 x 21 = 189 10 x 21 = 210 11 x 21 = 231 12 x 21 = 252 ...
((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.