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Question

17+27=7x
Given the above equation, what is the value of 9(21x+1)___


Solution

We can transform the given equation so that the right side is -21x
17+27=7x
44=7x
Multiply both sides by 3 
132=21x
Now we can plug the above value into the wanted expression
9(21x+1)=9(132+1)
                    = 9(133)
                    = 1197.
 

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