16*1/2+2*(-1/6)=7 цел 2/3
1)16*1/2=16/2=8
2)2*(-1/6)=-2/6=-1/3
3)8+(-1/3)=8-1/3=24/3-1/3=23/3=7 цел 2/3
Х * 12.5 + 100 = х * 16 - 12
12.5х+100 = 16х-12
12.5х-16х = -100-12
-3.5х = -112
х = -112:(-3.5)
х = 32
Ответ: 32 человека
<span><span><span>(<span>a+b</span>)</span><span>(<span><span><span>a 2</span>−<span>ab</span></span>+<span>b 2</span></span>)</span></span>= <span><span>a^3</span>+<span>b^3</span></span> </span><span>. </span>