2/5 x - 5=7/5 x
multiplyihg both sides of the equation by 5
2x-25=7x
subtracting 2 x from each side
-25=5x
x=-5
Use the given information to write an equation. let x represent the number described in the exercise. The difference between two-fifths of a number and 5 is seven-fifths of that number. write the equation and solve.
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