Get rid of the parentheses.
-(-x – y)
Answer
x + y
8(a + b)
8a + 8b
3 + (x + y)
3 + x + y
4 – (x2 + y)
4 – x2 – y
5{2x + y[3 – (x + z)]}
10x + 15y – 5xy – 5yz
7[3 + 2(a + 4b2) + a2]
21 + 14a + 56b2 + 7a2
2(a – 3b) – b(a + b)
2a – 6b – ab – b2
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