<span>24+х=25</span>
<span>х=25-24</span>
<span>х=1</span>
<span> 18:х=3</span>
<span>х=18:3</span>
<span>х=6</span>
<span>7 *х=14</span>
<span>х=14:7</span>
<span>х=2</span>
57:3=19-груш
57+19=76-всего деревьев