10-09-2014
Mathematics

contestada

Solve -3= 12y-5(2y-7) please
27=3c-3 (6-2c)

Respuesta :

11-09-2014

[tex]1.\\ -3=12y-5(2y-7)\\\\ -3=12y-10y+35\\\\ -3=2y+35\ \ \ |Subtract\ 35\\\\ -38=2y\ \ |Divide\ by\ 2\\\\ y=-19\\\\ 2.\\27=3c-3(6-2c)\\\\ 27=3c-18+6c\\\\ 27=9c-18\ \ \ |Add\ 18\\\\ 27+18=9c\\\\ 45=9c\ \ \ |Divide\ by\ 9\\\\ c=5[/tex]

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