Răspuns:
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Explicație pas cu pas:
Buna !!
[tex] ^{4)} \frac{2}{5} +^{5)} \frac{3}{4} - ^{10)} \frac{1}{2} = \frac{8}{20} + \frac{15}{20} - \frac{10}{20} = \frac{8 + 15 - 10}{20} = \frac{13}{20} [/tex]
Succes !!;)
✿❀AndreeaBrainly123❀✿
