Помогите , пожалуйста!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
#5= -2,5 #6= 3×(2х+1)=7х-4 6х-3=7х-4 -1х=-4+3 -1х=-1|÷(-1) х=1
