Question

                 What is the value of the variable that makes the statement true?                                                                            

a + (–7) + 3 = 0       A.–4        B. –3      C.4         D.7

Answer 1

`a+(-7)+3=0 \\ a-7+3=0 \\ a-4=0 \\ a=4`

The answer is C. 4.