60+70+80+90 = (6+7+8+9) x (what number ?
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Answered by
0
Answer:
10
Step-by-step explanation:
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Answered by
1
Answer:
10
Step-by-step explanation:
60+70+80+90=(6+7+8+9)x
6*10+7*10+8*10+9*10
60+70+80+90
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