Yes subtracting is taking away from another. 5-3 is two because you take 3 away from 5.
I think it is 989 or 899
*3 digit number*
*26 sum*
Last two digits are the same
x = perimeter
x<156
length = 66
so, in order to calculate perimeter you need to add two lengths and two widths
so
156 (perimeter) - 2 (66) = two widths
156 - 132 = 24 (remember this number is two widths added together)
so 24 twice the width SO 12 would be the number that the width can't be larger than
the width has to be less than 12
w < 12
F(4) = 2(4)^3 -5
= 2(64) -5
= 128-5
= 123
Hope this helps!
3x-13=305
3x=305+13
3x=318
(3x)÷3=318÷3
x=106
check.. (3×106)-13=305
318-13=305
305=305
