Respuesta :
x = 4
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Step-by-step explanation:
2x + 1 = 9
2x = 9 - 1
2x = 8
x = 8 ÷ 2
x = 4
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Answer:
Step-by-step explanation:
To solve:
|2x+1|=9
|2x+1|=-9
2x=8
x=4
2x=-10
x=-5
2x+1=9
2(4)+1=9
9=9, so its true.
2x+1=-9
2(-5)+1=-9
-9=-9, so it’s true too