Which of the following equations does not have a solution in integers?


Solving each of the equations given.


A. x + 1 = 1


Taking 1 to RHS and subtracting from 1.


x = 1- 1


x = 0


The solution is an integer.


B. x – 1 = 3


Taking 1 to RHS and adding to 3.


x = 3+1


x = 4


The solution is an integer.


C. 2x + 1 = 6


Taking 1 to RHS and subtracting from 6


2x = 6 – 1


2x = 5


Now taking 2 to RHS and dividing 5



x = 2.5


The solution is not an integer.


D. 1 – x = 5


Taking 1 to RHS and subtracting from 5


-x = 5 – 1


- x = 4


Multiplying both the sides by -1


x = - 4


The solution is an integer.

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