zahrast14
10.03.2021 •
Mathematics
9(x + 2) = 5 - 2x - 1)
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Ответ:
-1
Step-by-step explanation:
9(x+2)=5−2(x−1)
9x+18=5−2(x−1)
9x+18=5−2x+2
9x+18=7−2x
9x+18+2x=7
11x+18=7
11x=7−18
11x=−11
x= 11 /−11
x=-1
Ответ: