1)4х+3.96=4  2)3.5*(2Х-7)=59.5

1)4х+3.96=44х=4-3.964х=0.04х=0.04:4х=0.012)3.5*(2х-7)=59.57х-24.5=59.57х=59.5+24.57х=84х=84:7х=12