-15.6-5.2x-1.5=-21
21-15.6-1.5=5.2x
3.9=5.2x
x=0.75
1.( 1/3-5/16 ) : ( 1/6-1/8 ) = 1/2
1 3 2
1) 1/3 - 5/16 = 16/48 - 15/48 = 1/48
2) 1/6 -1/8 = 4/24 - 3/24 = 1/24
<span>3) 1/48 : 1/24 = 1/48 * 24/1 = 1/2
2.</span><span> (5/7-2/3)%(4/9-5/12)=</span>
1)5/7-2/3=1/21
2)4/9-5/12=1/3
<span>3)1/21%1/36=12/7</span>
360:16=20(л/м)-
с горячей
360:8=45(л/м)-с холодной
1) 120:100%=1,2(кг)- на 1%
2) 1,2*65%=78(кг)-осталось
3)120-78=42( кг)- вошло в мешок