Question

ex 14,15,16 va roggg

repedee
dau coroana

Answer 1

14.
a) 7/3  x 45 = 7x15 = 105
b) 5/3 x 7/11 = 35/33 = 1 intreg si 2/33
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15. Intr-o zi ara 43:2 = 21,5 ha
cinci zile: 5x 21,5 = 107,5 ha
opt zile: 8x21,5 = 172 ha
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16.
a) = 15:4 = 3 intregi si 3/4 sau 3,75
b) 26/7 x 65 = 26x65  /  7 = 1690 / 7 = 241 intregi si 3/7
c) 11/15 x 90 = 11x6=66
d) 17/5  x  32 = 544/5 = 108 si 4/5
e) 4/5 x 34 = 136/5 = 27 si 1/5 sau 27,2
f) 7/11 x 66/7 = 6(se simplifica prin 7 si 11).
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Succes in continuare!