Решите уравнения [tex] \frac{x}{7} [/tex]=-7
[tex] \frac{x-1}{2} [/tex]-[tex] \frac{3x}{5} [/tex]=2
[tex] \frac{x+8}{2} [/tex]-[tex] \frac{x-1}{4} [/tex]=3
[tex] \frac{x-1}{2} [/tex]-[tex] \frac{3x}{5} [/tex]=2
[tex] \frac{x+8}{2} [/tex]-[tex] \frac{x-1}{4} [/tex]=3
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Х/7=-7х=7*(-7)
х=-49
(х-1)/2-3х/5=2
5х-5-6х=20
-х=20+5
х=-25
(х+8)/2-(х-1)/4=3
2х+16-х+1=12
х=12-16-1
х=-5