Question

calculati
       
       
     (144 /x-4)/2-3=1
       
      1234-1234 /x=617
         
    55 /(11+480 /x)=5

Answer 1

$\frac{144}{ \frac{x-4}{2} } -3=1$

$\frac{144}{x-4} * \frac{1}{2} =1+3$

$\frac{144}{2(x+4)} =4$

$\frac{72}{x-4} =4$

$4*(x-4)=72$

$x-4= \frac{72}{4}$

$x-4=18$

$x=18+4$

$x=32$

$1234- \frac{1234}{x} =617$

$- \frac{1234}{x} =617-1234$

$- \frac{1234}{x} =-617 | *(-1)$

$\frac{1234}{x} =617$

$x= \frac{1234}{617}$

$x=2$

$\frac{55}{11+ \frac{480}{x} } =5$

$5*(11+ \frac{480}{x} =55$

$11+ \frac{480}{x} = \frac{55}{5}$

$11+ \frac{480}{x} =11$

$\frac{480}{x} =11-11$

$\frac{480}{x} =0$

La exercitiul 3 lipseste ceva, deoarece nu poti imparti un numar la 0.