sandy91 sandy91

03-05-2018
Mathematics

contestada

7×13 = 7 times parentheses blank +3 parentheses equals seven times blank parentheses +3×7×3 equals blank plus blank equals blank

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hallpatricia927 hallpatricia927

04-05-2018

do what now? I don't understand the question

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04-05-2018

the equation is

7*13=7*(_+3)=7*(_)+3*7*3=_+_=_

the full equation is

7*13=7*(10+3)=7*(_)+3*7*3=50+41=91

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