<span>-4*(3х+7,8)=0
-12х-31,2=0
-12х=31,2
х=-2,6</span>
7мм=0,7см
19мм=1,9см
948мм=94.8см
314мм=31,4см
8см25мм=10,5см
5см8мм=5,8см3ц48кг=3,48ц
<span>12ц 9 кг=12,9</span>
<span><span>5ц 20 кг=5.2ц</span></span>
<span><span>831кг=8.31</span></span>
<span><span><span>1758кг=17.58ц</span></span></span>
<span><span><span>28612кг=286.12ц</span></span></span>
<span><span><span>1мин30с=1.3(3)мин</span></span></span>
<span><span><span>15сек=0.25м</span></span></span>
<span><span><span>3мин 45с.=3,75мин</span></span></span>
<span><span><span>8мин24сек=8,...</span></span></span>
0,7,2,1,0,13,1,19,0,091,89,3,0,109,4,911,0,033,6,27,51,7