few errors in your title: 2 plus 4 = 6 6 plus 9 = 15 10 plus 25 = 35 18 + 81 = 99
That equals 550.
Yes. The answer is......................................................................................................................................................................................................................................................2.
no because it has an equal symbol in it
6
n=2.3
23
78 + 79 + 80 + 80 + 81 + 81 = 479
9n + 18 = 81 9n = 63 n = 7
16r2+9r
If a, b, c, and d are positive integers that add up to 20 they each must be less than 20. If abcd=81 then a, b, c, and d must be factors of 81. The factors of 81 are 1,3,9 then 27, so there is no solution to this problem.
9x+27 = -81 9x = -81-27 9x = -108 x = -12