5×_+5×_=135

Also need help with 4×_+4×_=152
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1 Answer

I guess the underlines represent unknowns. Because we are adding a product to itself, this is equivalent to:

10 x _=135, so the missing number is 135/10=13.5.

8 x _=152, so the missing number is 152/8=19.

by Top Rated User (1.1m points)

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