Sagot :
x-2/x-1=3
x-2=3(x-1) >> x-2=3x-3 >> 3x-3-x+2=0 >> 2x-1=0
x=1/2
x/5+1/4=x/2
x/5+1/4-x/2=0 >> (2x-5x)/10+1/4=0 >> -3x/10+1/4=0 >> 1/4=3x/10 >> 10=12x
x=5/6
1/4=3x
1=12x
x=1/12
x-2/x-1=3
x-2=3(x-1) >> x-2=3x-3 >> 3x-3-x+2=0 >> 2x-1=0
x=1/2
x/5+1/4=x/2
x/5+1/4-x/2=0 >> (2x-5x)/10+1/4=0 >> -3x/10+1/4=0 >> 1/4=3x/10 >> 10=12x
x=5/6
1/4=3x
1=12x
x=1/12