1)14(2х-3)-5(х+4)=2(3х+5)+5х 2)9(3х-7)+3(8х-11)=3(9х+8) - вопрос №8610944114235423552937381139836711136142 от Анастасия23102002 28.11.2020 20:04

Question

Математика: 1)14(2х-3)-5(х+4)=2(3х+5)+5х 2)9(3х-7)+3(8х-11)=3(9х+8) 3)6(7х-11)-13(х-6)=14(2х+1)

Анастасия23102002 · Answer

28х-42-5х-20=6х+10+5х28х-5х-6х-5х=10+20+4212х=72/:12х=627х-63+24х-33=27х+2427х+24х-27х=24+63+3324х=120/:24х=542х-66-13х+78=28х+1442х-13х-28х=14+66-78х=2...