robertaa
robertaa
06-11-2019
Mathematics
contestada
4a+7b+5a-b
6c+4d-c-7d
Respuesta :
vaidotasbudreika
vaidotasbudreika
06-11-2019
Answer:
a) 9a+6b
b) 5c-3d
Step-by-step explanation:
4a+5a=9a
7b-b=6b
6c-c=5c
4d-7d=(-3d)
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