7,24x+(2,6−12)=−13+2,6−2,76x

7,24x+(2,6−12)=−13+2,6−2,76x 7.24x-9.4=-10.4-2.76x 7.24x+2.76x=-10.4+9.4   10x=-1   x=-1/10   x=-0.1