1 ) 42 · 8 = 336 ( чел . ) - в восьми группах .
2 ) 360 - 336 = 24 ( м . ) - осталось .
Ответ : 24 места .
Р=A+B+O+D+P+M
S=A*B*D*O*P*M
=3/4*34/3-89/10*11/89=34/4-11/10=8 1/2-1 1/10=8 5/10-1 1/10=7 2/5
=91/6*5/91+13/100*92/13=5/6+23/25=125/150+138/150=263/150=1 113/150
=489/5*23/489-1/47*94/3=4 3/5-2/3=3 24/15-10/15=3 14/15
=470/7*3/5+167/5*19/167=40 2/7+3 4/7=40 10/35+3 28/35=44 3/35
Х-3/4х=1/2
1/4х=1/2
х=2
<span>Ответ: х=2</span>
<span>1. -6х-13=-7х-14</span>
<span>-6х + 7х = -14 + 13</span>
<span>х = -1.</span><span />
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</span>
<span>2. <span>6х-7(3х-5)-2(4х-7)=3</span></span>
<span><span> 6х - 21х + 35 - 8х + 14 = 3</span></span>
<span><span> -23х = -46</span></span>
<span><span>х = 2</span></span>