Question

Помогите решить задания

Answer 1

Ответ:

а)(5х-1)(5х+1)/(5х+1)²= (5х-1)/(5х+1)

б)(а-b+x(a-b))/(a-b+y(a-b))=(1+x)(a-b)/(1+y)(a-b)= (1+x)/(1+y)

в)a(a-x)/a(a+2x)=(a-x)/(a-2x)

г)(3х+у)²/(3х-у)(3х+у)=(3х+у)/(3х-у)

д)(4-8х-3х+9)/12=(2-4х)/5

(13-11х)*5=(2-4х)*12

65-55х=24-28х

-55х+28х=24-65

-27х=-41

х=41/27

х=1(14/27)