How can the equation x + 2 = 5 be solved using algebra tiles? A. Add two 1-tiles to each side. B. Remove two 1-tiles from the left side. C. Remove two 1-tiles from each side. D. Remove five 1-tiles from each side.

Question

Mathematics

Seth Barr

26 December, 02:54

How can the equation x + 2 = 5 be solved using algebra tiles? A. Add two 1-tiles to each side. B. Remove two 1-tiles from the left side. C. Remove two 1-tiles from each side. D. Remove five 1-tiles from each side.

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Answers (1)

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Tobias Wilkins · Answer 1

X + 2 = 5

If we try to add 2 on each side, we get X + 2 + 2 = 5 + 2 which comes out as X + 4 = 7.

If we remove 2 from the left side, we get X + 2 - 2 = 5 and we'd get X = 5, but if we cannot remove on one side without removing from the other.

If we remove 5 from both sides: X + 2 - 5 = 5 - 5, which is X + (-3) = 0 And we would need another step to determine X

So if we remove 2 from both sides, we'd get X + 2 - 2 = 5 - 2 which is X = 3, which is a good result.

Therefore the answer is C.