Respuesta:
A= -7
B= 513
C= 65
Explicación paso a paso:
A= -5+18/3-15+7
-5+6-15+7= -7
B= 7*63/7+45(70-20)/5
7*63/7+45+50/5
441/7+45*50/5
63+45*50/5
63+2.250/5
63+450
513
C= 90/10*15+7(15-45)/3
9*15+7(-30)/3
135+7(-10)
135+ (-70)
135-70
65
Suerte.
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Respuesta:
A= -7
B= 513
C= 65
Explicación paso a paso:
A= -5+18/3-15+7
-5+6-15+7= -7
B= 7*63/7+45(70-20)/5
7*63/7+45+50/5
441/7+45*50/5
63+45*50/5
63+2.250/5
63+450
513
C= 90/10*15+7(15-45)/3
9*15+7(-30)/3
135+7(-10)
135+ (-70)
135-70
65
Suerte.