39 x 4 = 156
39!/34! x 5! = (39 x 38 x 37 x 36 x 35)/(5 x 4 x 3 x 2) = 575,757 of them
One solution is, 31 + (2 x 4) = 31 + 8 = 39 Another is, 42 - (1 x 3) = 42 - 3 = 39
4 with 3 remaining 39 - 3 = 36 = 9 x 4
x + 7y = 39 So x = 39 - 7y Substitute for x in the second equation: 3(39 - 7y) - 2y = 2 117 - 21y - 2y = 2 115 = 23y y = 5 Substitute this value for y back into the first equation: x + 7*5 = 39 x + 35 = 39 x = 4
39 x 4 = 156
0 x 39 = 0 1 x 39 = 39 2 x 39 = 78 3 x 39 = 117 4 x 39 = 156 5 x 39 = 195 6 x 39 = 234 7 x 39 = 273 8 x 39 = 312 9 x 39 = 351 10 x 39 = 390
(4 x 39) + (13 x 69) = 1053
4 x 91/3 = 39
Original Equation: 4x + 9x = 39 Factor: x(4+9) = 39 Add: x(13) = 39 Divide: x = 3 Check: 4(3) + 9(3) = 12 + 27 = 39 = 39
39!/34! x 5! = (39 x 38 x 37 x 36 x 35)/(5 x 4 x 3 x 2) = 575,757 of them
4 with 7 remaining 39 - 7 = 32 = 8 x 4
One solution is, 31 + (2 x 4) = 31 + 8 = 39 Another is, 42 - (1 x 3) = 42 - 3 = 39
4 with 3 remaining 39 - 3 = 36 = 9 x 4
Since every other number is an odd (starting from 1), we automatically could say x, x + 2, x + 4, x - 2, are the variables. Adding these together and setting it to 160 yields a linear equation:x - 2 + x + x + 2 + x + 4 = 4x + 4 = 1604(x + 1) = 160x + 1 = 40x = 39Now plugging into the variables, we have:x - 2 = 39 - 2 = 37x = 39x + 2 = 39 + 2 = 41x + 4 = 39 + 4 = 43Therefore, {37, 39, 41, 43} is the answer.
160 = 4 x 40 so 156 = 4 x 39 then 152 = 4 x 38
39/1