<span>5/6-(3/10+2/5)</span>
<span>1) 0.3+0.4=0.7</span>
<span>2) 5/6=0.83</span>
<span>3)0.83-0.7=0.13</span>
<span>Ответ:0.13
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<span><span>(3/4+1/8)-5/8 = (6/8+1/8)-5/8=7/8-5/8=2/8=1/4</span></span>
1)3/4=0.75
2)1/8=0.125
3)0.75+0.125=0.825
4)5/8=0.625
5)0.825-0.625=0.2
Ответ:0.2