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Question
Find the sum of: 3x + 8y + 7z, 6y + 4z- 2x and 3y – 4x + 6z
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Solution
3x + 8y + 7z; 6y + 4z- 2x and 3y – 4x + 6z
3x + 8y + 7z + 6y + 4z - 2x + 3y – 4x + 6z
= 3x - 6x + 17y + 17z
= - 3x + 17y + 17z
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