16х-х=3105
15х=3105
х=3105/15
х=207
х+х+30=928
x + x = 928 – 30
2x = 898
x = 449
807*95=76665
350886:86=4080,06976744
6200*89=551800
16х-х=3105
15х=3105
х=3105/15
х=207
х+х+30=928
x + x = 928 – 30
2x = 898
x = 449
807*95=76665
350886:86=4080,06976744
6200*89=551800