Question

0,8(5х+1,5)= 2/7(1,4 х +8,4) решите

Answer 1

0.8(5x+1.5)=2/7(1.4x+8.4);
4x+1.2=0.4x+2.4;
4x-0.4x=-1.2+2.4;
3.6x=1.2;
x=1/3.

Answer 2

0,8•5х + 0,8•1,5=2/7•1,4х + 2/7•8,4
4х +1,2=0,4х+2,4
4х-0,4х=2,4-1,2
3,6х=1,2
х=0,33