5 x-x = 3.25, the value of the unknowns which make the left and right sides of the equation equal is () Please help!

5 x-x = 3.25, the value of the unknowns which make the left and right sides of the equation equal is (1.3)
3.5x-x=3.25
2.5x=3.25
x=3.25/2.5
x=1.3

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