Determine the number

Determine the number x that
75\dfrac{ 7 } { 5}
from one half from
7x17 x -1

Correct result:

x =  2.23


x+8=7512(7x1) x=2.23x+8 = \dfrac{ 7} { 5} \cdot \dfrac{1}{2} \cdot (7 x -1 ) \ \\ x = 2.23

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