# On what signs it is possible to break expressions into two groups? the second class 8+7+5+8, 9+8+8+8, 12+12+12+12, 18+18+18+18

Vaabat

146

In 1) and 2) numbers different, and in 3) and 4) repeat same the First group - the sum different composed: 8+7+5+8 9+8+8+8 second group - the sum identical composed: 12+12+12+12 18+18+18+18

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Maus Gisela

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