Find the missing length, when the perimeter is 9x+11.

Question

They give me 2 lengths:
2x+3 and 3x+1 how could I find the missing length x?

would I add 2x+3+3x+1? and then subtract the total by 9x+11?

Answer 1

Is your figure a triangle?
Are the three sides 2x+3, 3x+1, and x ??

If so, then

2x+3 + 3x+1 + x = 9x+11
6x - 9x = 11 - 4
x = -7/3 ..... makes no sense

OK, try something different.
let the third side be y

then 2x+3 + 3x+1 + y = 9x+11
y = 9x-5x+11-4
y = 4x+7

Answer 2

ohh, ok, thank you so much :)

Answer 3

find the missing legth of x
provided number
15cm
9cm and x