Question

6300 ÷90×c=350
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Answer 1

6300:90*с=350
70*с=350
с=350:70
с=5

Answer 2

6300:90•с=350; 70•с=350; с=350:70; с=5; Ответ:5; 150•20-а=1200; 3000-а=1200; а=3000-1200; а=1800; Ответ:1800;