Remove the parentheses from the following expression, and combine like terms: (2x + 3y – 4z) – (x – y – z)
A. 3x + 4y + 5z
B. 3x + 4y – 3z
C. x + 4y – 3z
D. x + 2y – 5z
-4(-6y + u - 3)
3(y+5)
To remove the parentheses from the given expression and combine like terms, follow these steps:
Step 1: Distribute the negative sign (-) to the terms inside the second parentheses:
-1(x) + (-1)(-y) + (-1)(-z) = -x + y + z
Step 2: Combine like terms:
(2x + 3y - 4z) - (x - y - z) = 2x + 3y - 4z - x + y + z = x + 4y - 3z
So, the correct answer is C. x + 4y - 3z.
2x +3y-4z-x+y+z
x +4y - 3z
C
Which one of the following pairs of terms is composed of like terms?
A. –3x, +3y
B. 2a, 2b
C. abc, cab
D. 4mn, 3my