Question

решите уравнение 0.8(х-2)-0.7(х-1)=2.7

Answer 1

0,8(x-2)-1.07(x-1)=2.7
0.8x-1.6-0.7x+0.7=2.7
0.1x=2.7-0.7+1.6
0.1x=3.6
x=36