Respuesta :

Assume blank is x. So then we have 70 * x=210
or 70x=210. Divide both sides by 70

70x=210
x=30

The value of the blank is 3

P.S. I think I made this too complicated. Just divide both sides by 70 and you will get the answer
byotic
Divide 210 by 70
210/70=3
3 is the answer

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