15 (х-2)=7(х-2)+16 3(5+2х)+4х=1455 3х-8=5х 5 (х+2)=9 - вопрос №15272163524145538552921610263730 от gussamovadel 13.03.2020 16:56

Question

Математика: 15 (х-2)=7(х-2)+16 3(5+2х)+4х=1455 3х-8=5х 5 (х+2)=9 (х-2)+16

gussamovadel · Answer

15(x-2)=7(x-2)+1615x-30=7x-14+168x-30=-14+168x=30-14+168x=32x=43(5+2x)+4x=145515+6x+4x=145515+10x=145510x=1455-1510x=1440x=1443x-8=5x3x-5x=8-2x=8x=-45(x+2)=9(x-2)+165x+10=9x-18+165x-9x=16-18-10-4x=-12x=3...