1000-0,708х=999,57166
-0.708х=999.57166-1000 -0.708х=-0.42834 х=-0.42834:(-0.708) х=0.605
1000-0,708х = 999,57166 -0,708х= 999,57166-1000 -0,708= -0,42834 х= -,042834 :0,708 х= -0,605