Question

Calculati Ma a nr:1/2;7/12;8/3;6/11    Va roggggg

Answer 1

ma = ( 1/2 + 7/ 12 + 8/3 + 6 /11) / 4
1 /2 + 7/12 + 8 /3 + 6 /11 =
numitorul comun este : 132
1·66/132 + 7·11 /132 + 8·44 /132 + 6·12 /132 =
  = 66/132 + 77/ 132 + 352 / 132 + 72 / 132 =
 = ( 66 + 77 + 352 + 72) / 132
  = 567 /132
ma = 567 / 132 : 4
     = 567 / 132 · 1 / 4
     = 567 / 132·4


 = 567 / 528
= 1,073

Answer 2

     $M_a = \frac{ \frac{1}{2} + \frac{7}{12} + \frac{8}{3} + \frac{6}{11} }{4}= \\ \\ = \frac{ \frac{66}{132} + \frac{77}{132} + \frac{352}{132} + \frac{72}{132} }{4}= \\ \\ = \frac{ \frac{66+77+352+72}{132} }{4}= \\ \\ = \frac{ \frac{567}{132} }{4}=\frac{567}{132*4}=\frac{567}{528}=\frac{189}{176}$