Ответы на вопрос:
X/3+3x/1=2-x/1|*3 x+9x=6-3x 10x+3x=6 13x=6: 13 x=6/13 5-(3-2x)+15=4-2(3-2x) 5-3+2x+15=4-6+4x 2x-4x=-2-17 -2x=-19: (-2) x=9,5
А)9 7/36-8 2/9 = 331/36 -74/9 = (331 × 1 - 74 × 4)/36 = 331/36 - 296/36 = 35/36б)6 - 5/8 =6/1-5/8=(6 × 8 - 5 × 1)/8 = 48/8 - 5/8 = 43/8 = 5 3/8 в)15 - 7 4/9 = 15/1 - 67/9 = (15 × 9 - 67 × 1)/9 = 135/9 - 67/9 = 68/9 = 7 5/9
Популярно: Математика
-
alenasen1234518.07.2020 14:38
-
dasha0020010024.04.2022 23:10
-
Andreyко21.07.2021 02:16
-
NikaSempay23.10.2021 07:03
-
jasmin30116.02.2023 12:20
-
GayaneshkaBrainly10.03.2020 11:51
-
JlunaJlove24.03.2021 17:25
-
llkk200310.03.2021 02:52
-
AREN1208200323.03.2020 02:57
-
staennayanina02.04.2021 04:05