Shouvik, Ashutosh, Harsha and Avijit were asked to solve the equation, 5x−x=72−4x. They have reported the values of x as 5, 9, 8 and 7 respectively. Who has got the correct solution?
A
Shouvik
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B
Ashutosh
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C
Harsha
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D
Avijit
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Solution
The correct option is B Ashutosh The given equation is 5x−x=72−4x.
Adding 4x on both sides of the equation, we get 5x−x+4x=72−4x+4x8x=72
Transposing 8 from LHS to RHS, we get, x=728x=9
So, the correct solution is x=9. Therefore, Ashutosh has found the correct solution.