Toñi Pérez - Matemáticas - IES Domenico Scarlatti

Ecuaciones de primer grado - 2º ESO

Resuelve las siguientes ecuaciones:

$\fs3a)\hspace{5ex}3(2x-1)\,+\,2(5x\,+\,3)\,-\,(4x\,+\,2)\,=\,3x\,-\,6\,;\;\;\;x\,=\,$

$\fs3b)\hspace{5ex}2x\,-\,1\,-\,\frac{\,x-3\,}{3}\,+\,\frac{\,x+1\,}{2}\,=\,3x\,+\,2\,;\;\;\;x\,=\,$

$\fs3c)\hspace{5ex}\frac{\,2(x\,-\,1)\,}{3}\,+\,\frac{\,x\,-\,5\,}{5}\,-\,\frac{\,3x\,+\,2\,}{3}\,=\,5x\,-\,\frac{\,3x\,+\,1\,}{5}\,;\;\;\;x\,=\,$

$\fs3d)\hspace{5ex}x\,-\,\frac{\,x\,+\,2\,}{2}\,-\,\frac{\,x\,+\,3\,}{5}\,=\,x\,+\,5(2x\,-\,3)\,-\,\frac{\,x\,-\,1\,}{2}\,;\;\;\;x\,=\,$

$\fs3e)\hspace{5ex}\frac{\,x\,-\,1\,}{5}\,+\,\frac{\,x\,-\,2\,}{3}\,-\,\frac{\,x\,-\,3\,}{5}\,=\,3x\,;\;\;\;x\,=\,$

$\fs3f)\hspace{5ex}\frac{\,2x\,-\,1\,}{10}\,+\,\frac{\,x\,+\,3\,}{2}\,-\,\frac{\,2x\,-\,2\,}{5}\,=\,\frac{\,3x\,-\,2\,}{2}\,;\;\;\;x\,=\,$

$\fs3g)\hspace{5ex}3(2x\,-\,1)\,-\,2(x\,-\,3)\,+\,\frac{\,x\,}{3}\,=\,2x\,+\,5\,;\;\;\;x\,=\,$

$\fs3h)\hspace{5ex}x\,-\,5\,+\,\frac{\,3x-1\,}{3}\,-\,4x\,=\,x\,;\;\;\;x\,=\,$

$\fs3i)\hspace{5ex}2(x\,+\,1)\,+\,4(x\,-\,2)\,=\,\frac{\,x\,-\,2\,}{4}\,+\,2\,;\;\;\;x\,=\,$

$\fs3j)\hspace{5ex}\frac{\,x\,+\,2\,}{5}\,-\,\frac{\,x\,-\,3\,}{3}\,+\,\frac{\,x\,+\,1\,}{2}\,=\,\frac{\,2x\,-\,1}{15}\,;\;\;\;x\,=\,$

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