0.6*(х+7)=0.5*(х-3)+6.8

и |0.63|:|х|=|-0.9|

0,6х+4,2=0,5х-1,5+6,80,1х=6,8-1,5-4,20,1х=1,1х=1,1:0,1х=11I0.63I=0.63 I-0.9I=0.90.63:x₁=0.9x₁=0.63:0.9x₁=0.70.63:(-x₂)=0.9x₂=-0.7