х÷12=2040
х=2040×12
х=24480
174÷х=29
х=174÷29
х=6
36×х=3600
х=3600÷36
х=100
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х÷12=2040
х=2040×12
х=24480
174÷х=29
х=174÷29
х=6
36×х=3600
х=3600÷36
х=100