An equation is shown.
2 (a+b) = c
Solve the equation for b in terms of a and c. Explain your answer.
A. b=c-2-a; subtract both 2 and a from each side.
B. b=c-2a; distribute 2 to get 2a+b, then subtract 2a from each side.
C. b=c+2a/2; distribute 2 to get 2a+2b, add 2a, then divide by 2.
D. b = c-2a/2; distribute 2 to get 2a+2b, subtract 2a, then divide by 2.
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