Explicación paso a paso:
a). (1)+(4)-16
1+4-16
5-16
-11
b). 3(25)/4 -7
75/4-7
75/4-28/4
47/4
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Explicación paso a paso:
a). (1)+(4)-16
1+4-16
5-16
-11
b). 3(25)/4 -7
75/4-7
75/4-28/4
47/4