Решите уравнения: 1) 2/3х=1 2)5х=1/6 3)4х=1/4 5 4) 7х=20

<span> 1) 2/3х=1</span>

<span>х=1:2/3</span>

<span>х= 1 1/2</span>

<span>
</span>

<span> 2)5х=1/6</span>

<span>х=1/6:5</span>

<span>х=1/30</span>

<span>
</span>

<span> 3)4х=1/45</span>

<span>х=1/45:4</span>

<span>х=1/180</span>

<span>
</span>

<span> 4) 7х=20</span>

<span>х=20:7</span>

<span>х=2 6/7</span>