540:X=380:19
540:х=20
х=540:20
<span>х=27
</span>х6=18000+24
х6=18024
х=18024:6
х=3004<span>
</span>3480-х=2190:3
3480-х=730
х=3480-730
<span>х=2750
</span><span>
</span>х+2010=3001*4
х+2010=12004
х=12004-2010
<span>х=9994</span><span>
</span>
1)200:4=50кг морк(1ящ) 2)50-10=40кг 3)40×4=160кг морк
x^2+x+1/x^4+x^2+1=x^2+x+1/x^4+2*x^2+1-x^2=x^2+x+1/(x^2+1)-x^2=x^2+x+1/(x^2-x+1)*(x^2+x+1)=1/x^2-x+1
45,3*(0,5*2)+(0,25*4)*5,7=45,3*1+5,7*1=51