[tex] \frac{17}{23} *x=92
[/tex]
17x=23*92
17x=2116
x=[tex] \frac{2116}{17} [/tex]
[tex] \frac{x}{x+1} *12=8[/tex]
12x=8x+8
4x=8
x=2
[tex] \frac{3x+1}{2x+5} *252=20
[/tex]
252(3x+1)=20(2x+5)
756x+252=40x+100
716x=-152
x=-[tex] \frac{152}{716} = \frac{76}{358}= \frac{38}{179} [/tex]
[tex] \frac{x}{3} *(x+1)=4[/tex]
x(x+1)=3*4
x=3