We are given the following information
M is between G and T
MG = 2x + 1
MT = 3x + 3
GT = 19
Let us draw a sketch to better understand the problem
As you can see, the sum of MG and MT must be equal to the GT
Mathematically,
Let us solve the above equation or x
So, the value of x is 3
Therefore, the required values are
x = 3
MG = 7
MT = 12