решите уравнение 6х+4х+110=500
6х+4х+110=500
10x + 110 = 500
10x = 500 - 110
10x = 390
x = 390:10
x = 39
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6*39+4*39 +110 = 500
10х=500-110
10х=390
х=39 :)