Respuesta:
a) 13+x= -8
x= -8-13
x= -21
b) 22+x= -52
x= -52-22
x= -74
c) 15+x= -52
x= -52-15
x= -67
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Verified answer
Respuesta:
a) 13+x= -8
x= -8-13
x= -21
b) 22+x= -52
x= -52-22
x= -74
c) 15+x= -52
x= -52-15
x= -67