20. simplify this expression: 13+ (-) = ?
o a.6
o b.-6
o c.-30
o d.30...
Mathematics, 17.08.2019 00:10 ekmusicent4028
20. simplify this expression: 13+ (-) = ?
o a.6
o b.-6
o c.-30
o d.30
Answers: 2
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