Respuesta :
Answer:
x=71
Step-by-step explanation:
409+x=480
x=480-409
x=71
Answer:
x=263
Step-by-step explanation:
261+148=409
409+x=672
x=672-409
x263
Answer:
x=71
Step-by-step explanation:
409+x=480
x=480-409
x=71
Answer:
x=263
Step-by-step explanation:
261+148=409
409+x=672
x=672-409
x263