PauletteLahmann PauletteLahmann

11-06-2014
Mathematics

contestada

If 9(x − 9) = −11, then x = ?
A. -92/9
B. -20/9
C. -11/9
D. -2/9
E. 70/9

Respuesta :

konrad509 konrad509

11-06-2014

[tex]9(x - 9) = -11\\ 9x-81=-11\\ 9x=70\\ x=\frac{70}{9} [/tex]

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11-06-2014

[tex]9(x - 9) =-11\\ \\9x-9\cdot 9=-11\\ \\9x-81=-11 \ \ |+81\\ \\9x-81+81=-11+81\\ \\9x=70 \ \ /:9\\ \\x=\frac{70}{9}\\ \\Answer : \ E. \ \ 70/9 [/tex]

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