Реши уровнения . 450-х=60×7 480:х=100:10

<span>450-х=350
х=450 - 350
х=100


</span><span>480:х=10
</span><span>х=480 : 10
х= 48

</span>

<span>450-х=60×7
</span>х=420
х=450-420
х=30
________________________
450-30=60·7
30=30

480:х=100:10
х=100:10
х=10
х=480:10
х=48
_______________
480:48=100:10