Предмет: Алгебра, автор: Джемми007

2(3х - 1)(2х + 5) - 6(2х - 1)(х + 2) = 48;

Ответы

Автор ответа: яВиктория

2(3х - 1)(2х + 5) - 6(2х - 1)(х + 2) = 48

2(6х²+15х-2х-5)-6(2х²+4х-х-2)=48

12х²+30х-4х-10-12х²-24х+6х+12=48

8х=48+10-12

8х=46

х=46/8

х=5,75

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