154 стр
40+27. - 132
48+30. - x
67(элементов). - 132
78 (элем) - x
x= 132•78/67=154 стр
1)(12.5*4)(0.8*0.25)*7.28=72.8
2)2,929 * 8,356 + 2,929 * 1,644=24,474724+4,815276=29,29
3)34.946*0.2*500=3496.6
4)47.612*3.21-47.512*3.21=152,83452-152,51352=0,321
1)(x+43)-96=25. X+43=96+25. X+43=121. X=121-43 X=78. 2)(74-X)+25=68. 74-X=68-25. 74-X=43. X=74-43. X=31