<span>1</span><span>) 32</span><span>- 12</span><span>20 (</span><span>грн) -</span><span>різниця</span><span>2</span><span>)</span><span>60:</span><span>20</span><span>=</span><span>3</span><span>(грн</span><span>) -</span><span>вартує одна</span><span>ручка.</span><span>3</span><span>) 32</span><span>*</span><span>3</span><span>= 96</span><span>(грн</span><span>) -</span><span>заплатили</span><span>за</span><span>прості</span><span>ручки.</span><span>4</span><span>) 12</span><span>*</span><span>3</span><span>= 26</span><span>(грн</span><span>) -</span><span>заплатили</span><span>за</span><span>гелівие</span><span>ручки</span>
32+18:(2х3)=35
(32+18:2)х3=123
(32+18):2х3=75
А) к+34=73
к=39
Б) у-29= 62
у=91
-8/3-y=-1/3
-y=-1/3+8/3
-y= 7/3
Ответ : -7/3
( т.к игрек был отрицательным)