7.05*12.4-х=28.5
87.42-х=28.5
х=87.42-28.5
х=58.92
х+25.4=5.04*6.05
х+25.4=30.492
х=30.492-25.4
х=5.092
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Answers & Comments
87,42-x=28,5
x=87,42-28,5
x=58,92
2)x+25,4=5,04×6,05
x+25,4=30,492
x=30,492-25,4
x=5,092
это 20
общее расстояние=1440+510=1950
общая скорость=800+850=1650
делим=1950÷1650=1,18
7.05*12.4-х=28.5
87.42-х=28.5
х=87.42-28.5
х=58.92
х+25.4=5.04*6.05
х+25.4=30.492
х=30.492-25.4
х=5.092