Ответ:
а) 9х -14 = -3х -2
9х+3х=-2+14
12х=12
х=1
б) 24х-9(х-8)=-18
24х-9х+72=-18
15х = -18-72
15х= -90
х=-6
в) (9х-4)/5-(6х-1)/7=5
(63х-28-30х+5)/35=5
33х-23=175
33х=175+23
33х=198
х=6
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Answers & Comments
Ответ:
а) 9х -14 = -3х -2
9х+3х=-2+14
12х=12
х=1
б) 24х-9(х-8)=-18
24х-9х+72=-18
15х = -18-72
15х= -90
х=-6
в) (9х-4)/5-(6х-1)/7=5
(63х-28-30х+5)/35=5
33х-23=175
33х=175+23
33х=198
х=6