Mathematics
Evaluate:
7x - 9y + 3 - 3x - 5y + 8
Algebraic Expressions
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Answer
7x - 9y + 3 - 3x - 5y + 8
Arrange the polynomial with like terms together and combine them.
(7x - 3x) - 9y + 3 - 5y + 8
= 4x + (- 9y - 5y) + 3 + 8
= 4x - 14y + (3 + 8)
= 4x - 14y + 11
Hence, 7x - 9y + 3 - 3x - 5y + 8 = 4x - 14y + 11
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