evaluate the expression
2x-3y-4z
x=7 y=-3 z=-1
Just substitute the appropriate values for their letters, multiply and subtract.
2(7)-3(-3)-4(-1)
14+9+4=
27
To evaluate the expression 2x - 3y - 4z, you simply need to substitute the given values for x, y, and z into the expression and perform the corresponding calculations.
Given:
x = 7
y = -3
z = -1
Substituting these values into the expression:
2x - 3y - 4z = 2(7) - 3(-3) - 4(-1)
Now, let's simplify each term:
2(7) = 14
-3(-3) = 9
-4(-1) = 4
Now we can substitute these simplified values into the expression:
2x - 3y - 4z = 14 - 9 - 4
Next, perform the calculations:
14 - 9 = 5
5 - 4 = 1
So the final result is 1.
Therefore, when x = 7, y = -3, and z = -1, the expression 2x - 3y - 4z evaluates to 1.