3х + 9 = 8, (x = - 1)
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Answer:
3x+9=8,(x=-1)
Step-by-step explanation:
3x+9=8,(x=-1)
x=1
3(-1)+9=8
3(-1)=-3
then,
-3+9=6
so,
3x+9≠8
3x+9=6
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