donnafranks2003
donnafranks2003 donnafranks2003
  • 18-10-2019
  • Mathematics
contestada

use parentheses to make each number sentence true 1+2×3+4=21​

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jujudime
jujudime jujudime
  • 18-10-2019
(1+2)(3+4)
1+2=3
3+4=7
7•3=21
There is an invisible multiplication sign between the two parentheses :).
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