влно

Verified answer

6х+8х-7х=714   7х=714         х=102
23х-19х+5х=1827   9х=1827   х=203
11х-6х+17=2042    5х=2025  х=405
5х+3х-47=6401  8х=6448   х=806

Кариночка78 7х=714
х=714:7
х=102
6*102+8*102-7*102=612+816-714=714
714=714

9х=1827
x=1827:9
x=203
23*203-19*203+5*203=1827

5x=2042-17
5х=2025
=2025:5
=405
11*405-6*405+17=2042
2042=2042
8х=6401+47
8х=6448
=6448:8
=806
5*806+3*806-47=6401
6401=6401