Consider the equation a + b = c - d/2

when solved for each variable. Choose all that are correct.

a = 1/2 (-2b + c - d)

b = 1/2 (-2a + c - d)

c = 2a + 2b + d

d = - 2a - 2b + c

Show how to use the distributive property to simplify 4 (5 + x).

What is the simplified expression for - 3 (2x - y) + 2y + 2 (x + y) ?

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