6 Реши уравнения: (a)(58+00)發-7倍 515 6) (y-3) + 64 = 84

1. а) \[(5 \frac{6}{15} + x) - 12 = 7 \frac{3}{15}\] \[5 \frac{6}{15} + x = 7 \frac{3}{15} + 12\] \[5 \frac{6}{15} + x = 19 \frac{3}{15}\] \[x = 19 \frac{3}{15} - 5 \frac{6}{15}\] \[x = 18 \frac{18}{15} - 5 \frac{6}{15}\] \[x = 13 \frac{12}{15}\] \[x = 13 \frac{4}{5}\]
2. б) \[(y - 39) + 69 = 89\] \[y - 39 = 89 - 69\] \[y - 39 = 20\] \[y = 20 + 39\] \[y = 59\]

Ответ: a) x = 13 4/5; б) y = 59