х×30=900÷3
30х=300
х=300÷30
х=10
Х×6=50+310
6х=360
х=360÷6
х=60
у÷4=72-44
у÷ 4=28
у=28×4
у=112
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х×30=900÷3
30х=300
х=300÷30
х=10
Х×6=50+310
6х=360
х=360÷6
х=60
у÷4=72-44
у÷ 4=28
у=28×4
у=112