1) 2(2,6x-4)=-30+5,09x
1. 2(2,6x-4)=-30+5,09x
2. 5.2х-8=-30+5,09х
3. 5.2х-5.09х=-30+8
4. 0.11х=-22
5. х=-22\0.11
6. х=200