Unknown number 5

I think unknown number. If we enlarge it five times then subtract 3 and result decreases by 75% we get the number by one greater than the number I think. What number am I thinking?

Result

x =  7

Solution:

(5x-3)*(1-75/100) = 1+x

25x = 175

x = 7

Calculated by our simple equation calculator.

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