Explicație pas cu pas:
a) [(3⁶:3⁴+6)+25]:4-5
[(3²+6)+25]:4-5
[(9+6)+25]:4-5
(15+25):4-5
40:4-5
10-5
5
b) 12,8x7+1,52²:1,2
89,6x+
[tex]( \frac{38}{25})^{2} \div \frac{5}{6} [/tex]
89,6x+
[tex] \frac{1444}{625} \times \frac{5}{6} [/tex]
89,6x+
[tex] \frac{722}{125} \times \frac{1}{3} [/tex]
89,6x+
[tex] \frac{722}{375} [/tex]
c)
[tex](2 + 3 \times \frac{1}{12} ) \div 2 \frac{1}{2} [/tex]
[tex](2 + \frac{1}{4} ) \times \frac{1}{2} \times \frac{1}{2} [/tex]
[tex] \frac{9}{4} \times \frac{1}{2} \times \frac{1}{2} [/tex]
[tex] \frac{9}{16} [/tex]
COROANA??
