1)0.6-1.6(х-4)=3(7-0.4х) 2)8х-1.1=3х+1.4 3)17+1.2(х+1)=9+1.1х - вопрос №17660211061643704281131431712191145632040 от Yaroslav1640 22.06.2020 17:27

Question

Математика: 1)0.6-1.6(х-4)=3(7-0.4х) 2)8х-1.1=3х+1.4 3)17+1.2(х+1)=9+1.1х 4)5.6-3(2-0.4)=0.4(4х+1)

Yaroslav1640 · Answer

0.6-1.6x+6.4=21-1.2x           8x-1.1=3x+1.4-1.6x+1.2x=21-7                   8x-3x=1.4+1.1-0.4x=14                                5x=2.5-x=35                                     x=0.5x=-35...