Ответ:
[tex]216 + y \times 15 = 831[/tex]
[tex]216 + 15y = 831[/tex]
[tex]15y = 831 - 216[/tex]
[tex]15y = 615[/tex]
[tex]y = 41[/tex]
831-216=615
615÷15=41
Ответ:y=41
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Ответ:
[tex]216 + y \times 15 = 831[/tex]
[tex]216 + 15y = 831[/tex]
[tex]15y = 831 - 216[/tex]
[tex]15y = 615[/tex]
[tex]y = 41[/tex]
831-216=615
615÷15=41
Ответ:y=41