Решите уравнение:
4х+2(1-3х)=13

4х+2-6х=13-2х=11х=-5.5

4х+2(1-3х)=134х+2-6х=13-2х=13-2-2х=11х=11:(-2)х=-5,54(-5,5)+2(1-3(-5,5))=13-22+2(1+16,5)=13-22+2*17,5=13-22+35=13 13=13