Reduce las siguientes expresiones algebraicas:
1)
[tex] \frac{a}{2} + \frac{a}{3} + \frac{a}{4} = [/tex]
2)
[tex] \frac{a {}^{2} b }{5} - \frac{2ab {}^{2} }{3} + \frac{3ab {}^{2} }{2} - \frac{6a {}^{2} b}{5} = [/tex]
3)
[tex]m - \frac{m}{2} + \frac{2m}{3} - \frac{m}{4} = [/tex]
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