Решите уравнения: а)х:6*7=420 б)х*7=420 в)х+7=420:6
а) x:6*7=420x:6=420:7x:6=60x=60*6=360б) x*7=420x=420:7x=60в)x+7=420:6x+7=70x=70-7x=63
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а) x:6*7=420
x:6=420:7
x:6=60
x=60*6=360
б) x*7=420
x=420:7
x=60
в)x+7=420:6
x+7=70
x=70-7
x=63