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Question

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Answer 1

Общий знаменатель 15. ⇒ 5х+45-3х+3=2 
2х= -46
х=- 23 
ответ: -23

Answer 2

5(х+9)-3(х-1)=2×15
5х+45-3х+3=30
2х+48=30
2х=30-48
2х=-18
х=-18÷2
х=-9