18.47 is the answer when you add them together
I can’t exactly find the answer. But if you don’t get any answers either hopefully this is helpful. I would pick 24.
28 + 29 + 42 = 28 + 42 + 29 = 99
Commutative property: a + b = b + a
7= 16 + 3x
7-16 = 3x
-9 = 3x
x = (-9)/(3)
x = -3
4.72n - 0.1 = 8 + 0.67n
4.72n - 0.67n = 8 + 0.1
4.05n = 8.1
4.05n/4.05 = 8.1/4.05
n = 2