(19 - 18 1/3) * (7,13 - 8,03) + 8 1/4 = 7,65
1) 19 - 18 1/3 = 2/3
2) 7,13 - 8,03 = -0,9
3) 2/3 * (-0,9) = 2/3 * (-9/10) = -3/5
4) -3/5 + 8 1/4 = -3/5 + 33/4 = -12/20 + 165/20 = 153/20 = 7,65
ответ: 7,65
(19 - 18 1/3) * (7,13 - 8,03) + 8 1/4 = 7,65
1) 19 - 18 1/3 = 2/3
2) 7,13 - 8,03 = -0,9
3) 2/3 * (-0,9) = 2/3 * (-9/10) = -3/5
4) -3/5 + 8 1/4 = -3/5 + 33/4 = -12/20 + 165/20 = 153/20 = 7,65
ответ: 7,65