1) <span>14/15 + 4 7/15 =5 6/15=5 2/5</span>
<span>2) <span>3 3/12 + 11/12 =4 2/12= 4 1/6</span></span>
<span><span>3) <span>3 3/12 + 1 11/12= 5 2/12=5 1/6</span></span></span>
<span><span><span>4)<span>1 2/15 + 4 7/15 = 5 9/15= 5 3/5</span></span></span></span>
<span><span><span><span>5)<span>1 14/15 + 4 7/15= 6 6/15= 6 2/5</span></span></span></span></span>
1 поле = 50 т
2 поле - 50 т - 20 ц
3 поле - (50 т - 20 ц) + 45 ц
Всего: ?
1) 50 т - 20 ц = 50*10 - 20 = 500 - 20 = 480 ц - собрали со 2 поля
2) 480 ц + 45 ц = 525 ц собрали с 3 поля
3) 50 т + 480 ц + 525 ц = 50*10 + 1005 ц = 500 + 1005 ц = 1505 ц = 150 т 5 ц