215+175+___________ =175+320+215
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Answered by
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Let the number = x
215+175+ x =175+320+215
⇒ 175+ x =175+320
⇒x = 320
Answered by
0
Answer:
320
Step-by-step explanation:
215+175+___________ =175+320+215
<=> 390+______ = 710
=> ____=710-390=320
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