A rope 3a+6 meter long and is attached to anotherrope of lenght 2a - 7 meters find the total lenght of the rope

Total length of rope = (3a+6)m+(2a-7)m
                                = (3a+6+2a-7)m
                                = (3a+2a)+(6-7)m                             (grouping variables with variables and numerals with numerals)
                                =(5a)+(-1)m
                                =(5a-1)m                                          (ans)
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3A+6M + 2A-7M
​3a + 6 +2a -7
5a-1

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