Resuelve con procedimiento:
a.(4/9)(3/8)(7/3)
b.(1/5)(- 3/8)(- 8/9)
c.(21/3)(2/5)+4/5-3/20
d.(3/10)(3/8)(9/4)(- 3/5)+4/3+2/3
e.7/8-1/2+(3/4)(7/4)(4/3)
a.(4/9)(3/8)(7/3)
b.(1/5)(- 3/8)(- 8/9)
c.(21/3)(2/5)+4/5-3/20
d.(3/10)(3/8)(9/4)(- 3/5)+4/3+2/3
e.7/8-1/2+(3/4)(7/4)(4/3)
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b.
c. 3.45
d.
e. 2.125