Respuesta:
a) 5/18+7/25+11/45
125/450+125/450+110/450= 361/450
b) 450/450-361/450= 89/450
c) 450. 361/450= 450
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Respuesta:
a) 5/18+7/25+11/45
125/450+125/450+110/450= 361/450
b) 450/450-361/450= 89/450
c) 450. 361/450= 450