Ответ:
1)x*4=360
4x=360|:4
4x:4=360:4
x=360:4
x=90
2)x*7=63
7x=63|:7
7x:7=63:7
x=63:7
x=9
3)680-x=300
680-x-680=300-680
-x=300-680
-x=-380
x=380
Пошаговое объяснение:
[tex]1)x \times 4 = 360 \\ 4x = 360 \\ x = 90[/tex]
[tex]2)x \times 7 = 63 \\ 7x = 63 \\ x = 9[/tex]
[tex]3)680 - x = 300 \\ - x = 300 - 680 \\ - x = - 380 \\ x = 380[/tex]
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Ответ:
1)x*4=360
4x=360|:4
4x:4=360:4
x=360:4
x=90
2)x*7=63
7x=63|:7
7x:7=63:7
x=63:7
x=9
3)680-x=300
680-x-680=300-680
-x=300-680
-x=-380
x=380
Пошаговое объяснение:
[tex]1)x \times 4 = 360 \\ 4x = 360 \\ x = 90[/tex]
[tex]2)x \times 7 = 63 \\ 7x = 63 \\ x = 9[/tex]
[tex]3)680 - x = 300 \\ - x = 300 - 680 \\ - x = - 380 \\ x = 380[/tex]