Вопрос школьника по предмету Математика
Решите уравнение срочно. 2/9(0,45-2,7y)-2/17(0,51-0,34y)=0,16 срочно пожалуйста
Ответ учителя по предмету Математика
2/9*45/100 — 2/9*27/10 у — 2/17*51/100 — 2/17 * 34/100у=16/100
5/50 — 3/5y — 3/50 — 2/50y = 16/100
2/50 — 15/25y — 1/25y = 16/100
1/25 — 16/25 y = 4/25
1/25 — 4/25 = 16/25 y
16/25 y = -3/25
0.64y= -0.12
y=-0.12 : 0.64
y = — 0.1875
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