1) 6х+8х-7х=714 2) 23х-19х+5х=1827 3)11х-6х+17=2042 4) 5х+3х-47=6401

Question

1) 6х+8х-7х=714 2) 23х-19х+5х=1827 3)11х-6х+17=2042 4) 5х+3х-47=6401

Answer 1

1) 7х = 714
х = 102
2) 9х = 1827
х = 203
3) 5х = 2042 - 17
5х = 2025
х = 405
4) 8х = 6401 + 47
8х = 6448
х = 806
Вот пж.

Answer 2

1) 6+8-7=7
7х=714
х=102

Comments

23х-19х+5х=1827
9х=1827
х=1827:9
х=203
~
11х-6х+17=2042
5х+17=2042
5х=2042-17
5х=2025
х=2025:5
х=405
~
5х+3х-47=6401
8х-47=6401
8х=6401-47
8х=6354
х=6354:8
х=794,25