2 x 10+10:{30+2x102 : [70-48 x 10: (9x10 - 40:4)]}

Va rog fain


Răspuns :

=2×10+10×{30+2×102:[70-48•10:(90-10)]}

=2×10+10×[30+2×102:(70-48×10:80)]

=2×10+10×[30+2×102:(70-6)]

=20+10×(30+204:64)

=20+10•[tex](30 + \frac{51}{16})[/tex]

=20+10×[tex] \frac{531}{16} [/tex]

=20+[tex] \frac{2655}{8} [/tex]

=[tex] \frac{2815}{8} [/tex]