18
11,33
2n+13
2x + 7
2n + 33
18
11,33
x = 11
If the number is n, then twice the number is 2n and the sum of the two is n + 2n = 3n.
5 and 2
"the sum of 2" and "twice" "a number" "is" "36"2+2x=36 â–
47 Impossible problem!
10
If the sum of a number and 4 is (X + 4) then twice that is 2(X + 4) which is 2X + 8
The number is 17.
2n+13
2x + 7