Question

Pleeaase help with these 4 questions!

Simplify the following expression.
3x - 4y + 6z - x - 3y + 2z
Answer

2x - 7y + 12z

2x - 7y + 8z

2x - y + 8z

4x - y + 8z

Suzie worked the following problem incorrectly.

Part 1) In which line was the mistake made?
Part 2) Show your work and give the correct answer?

Line 1 50 ÷ 5(3 - 1) - 4
Line 2 50 ÷ 5(2) - 4
Line 3 50 ÷ 10 - 4
Line 4 5 – 4
Line 5 1

Which of the following expressions could be simplified further?
Answer

6x - 7m + 9xz

4x + 3m - 5x + 8a

8x + 3m + 7n + 4xz - 5p

2x + 3m - 5xy + 4z

Answer 1

1. the second is right
2.is right every lines
3.the second