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Simplify the expressions using the four level operations
1) Simplify the expression (2x - 3y + 4z) - (9x - 8y + 7z)- (-x – y +z)
- 6x + 6y - 4z
- 9x + 9y - 4z
- 6x - 6y - 4z
- 9x + 6y - 7z
1/10
Solution
Answer:
- 6x + 6y - 4z
Explanation:
(2x - 3y + 4z) – (9x - 8y + 7z) - (-x – y +z)
Collecting like terms x, y, z
(2x - 9x + x) + (-3y + 8y + y) + (4z - 7z - z)
= - 6x + 6y - 4z
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