2x=45 - 5
2x=40
x=20
45 - 40 = 5
<span>1) (5+5)/5 - 5/5 =1<span> </span></span>
<span>2) (5+5)/5 - 5 + 5 =2<span> </span></span>
<span>3) (5+5)/5 + 5/5 =3<span> </span></span>
<span>4) (5+5+5+5)/5 =4<span> </span></span>
<span>5) 5+5-5+5-5=5<span> </span></span>
<span>6) 5 + 5/5 + 5 - 5 =6<span> </span></span>
<span>7) 5 + 5/5 + 5/5 =7<span> </span></span>
<span>8) 5 + (5+5+5)/5 =8<span> </span></span>
<span><span>9)</span></span><span>5 + 5 - 5^(5-5) = 9 (вспоминаем что любое число, в том числе 5, в степени 0 будет 1)<span> </span></span>
<span>10)5 + 5 - (5-5)/5 = 10</span><span><span> </span></span>
Угол в 90°.................
-2/3+6 4/5=6 2/15
-5/6+2 3/10=-2034/30=3 4/30=-3 2/15
6 2/15-(-3 2/15)=3
( 28182 : 7 ) * 6 = 24156