Answer:
15
Step-by-step explanation:
Since we know x = 2 and z = 3x, let's find z by substituting the value for x into z:
z = 3(2) = 6
Now that we have the values of both x and z, we can substitute them into the expression and simplify:
x + 4z - 5 - 3x
= 2 + 4(6) - 5 - 3(2)
= 2 + 24 - 5 - 6
= 15
