Toán Lớp 6: [x+9] x 2 = 10
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Toán Lớp 6: [x+9] x 2 = 10
Giải giúp tui với
Comments ( 2 )
<=>|x+9|=10:2
<=>|x+9|=5
<=>\(\left[ \begin{array}{l}x+9=5\\x+9=-5\end{array} \right.\)
<=>\(\left[ \begin{array}{l}x=-4\\x=-14\end{array} \right.\)
Vậy : x in {-14; -4}