Hi, 

*Note: when 'solving' for a variable, we must isolate the variable on one side of the equation

7 + 6/a =5

Multiplying each term on both sides of the equation by a so as all denominators = 1

7a + 6 = 5a

Performing operations necessary on both sides of the equation to isolate 'a'

7a + 6 = 5a  subtracting 5a from both sides

2a + 6 = 0   subtracting 6 from both sides of equation

2a = -6      divding both sides by 2

a = -3       

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