1.9(x+6)=72 2.23(x-12)=552 3.15(2x+11)=285 4.7(123-4x)=749 - вопрос №34602981967222312552315211285471234749 от zhenyshkrab87 22.11.2022 05:24

Question

Алгебра: 1.9(x+6)=72 2.23(x-12)=552 3.15(2x+11)=285 4.7(123-4x)=749

zhenyshkrab87 · Answer

1) 9(х+6)=729х+54=729х=18х=18:9х=22) 23(х-12)=55223х-276=55223х=828х=828:23х=363) 15(2х+11)=28530х+165=28530х=120х=120:30х=44) 7(123-4х)=749861-28х=749-28х=-112х=-112:(-28)х=4...