Answer:
6 positive tiles
Step-by-step explanation:
6-6 is zero
There are 360 degrees in the rhombus which means the equilateral triangles has 180 degrees (because it is half the rhombus and also it is the angle sum of a triangle). It is equilateral meaning all sides and angles are the same so they all must be 60 (180/3)
Now this must mean that angle a is equal to the opposing angle being 60
Answer:
5x+3
Step-by-step explanation:

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They are not equivalent because 27-(63-8) is equal to -28 and (72-63)-8 is equal to 1.<span />