Craig writes 3x + 5y - x - 4y = 3 +9y. Can you spot the 2 mistakes he has made?
2 answers:
Answer:
first 5y-4y does not equal 9y.
second 3x-x is 2x but he put 3.
Step-by-step explanation:
Math - Answered Sun.Sept.19.2021
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craig forgor how subtraction works
mistake 1: instead of doing 3x - x, he did like multiplication and also forgor about the negative sign and somehow got 3.
mistake 2: instead of doing 5y - 4y, he did 5y + 4y
if he did it right, the answer would be 2x + y
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