a = 12, b = -23, c = -34. What is the value of a - ba + c-ab+bc?

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[GMAT math practice question]

a = 1/2, b = -2/3, c = -3/4. What is the value of a - b/a + c-ab+b/c?

A. 1
B. 7/6
C. 27/6
D. -31/9
E. -5
Source: — Problem Solving |

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