Solve & explain it :  
Q.(iv) 3 - x 4 = - 7
(v) x - 13 2 = 11                                  

iv     3-x4 = -73-x = -28x = 3 + 28 = 31v.    x - 132 = 11x = 11 + 132x = 22+132 = 352

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