5*(-5)=5/3-(-5)/4=5/3+5/4=35/12
2*(2*χ)=1*χ
2*(2/3-x/4)=1/3-x/4
2/3-(2/3-x/4)/4=1/3-x/4
2/3-1/6+x/16=1/3-x/4
1/2+x/16=1/3-x/4
5x/16=-1/6
x=-8/15
5*(-5)=5/3-(-5)/4=5/3+5/4=35/12
2*(2*χ)=1*χ
2*(2/3-x/4)=1/3-x/4
2/3-(2/3-x/4)/4=1/3-x/4
2/3-1/6+x/16=1/3-x/4
1/2+x/16=1/3-x/4
5x/16=-1/6
x=-8/15