Question

-4х(2х-5)+3(5х-7)=-15

Answer 1

-8x+20+15x-21=-15
7x=-14
x=-2

Answer 2

-4(2х-5)+3(5х-7)=-15
-8х+20+15х-21=-15
7х-1-=-15
7х=-15+1
7х=-14
х=-2

Answer 3

не за что)