127. Решите уравнение:

Решение:

1. \( 25x + 9x = 1394 \)

\( 34x = 1394 \)

\( x = \frac{1394}{34} \)

\( x = 41 \)

2. \( 30y - 2y = 532 \)

\( 28y = 532 \)

\( y = \frac{532}{28} \)

\( y = 19 \)

3. \( 9a - a + 14 = 94 \)

\( 8a + 14 = 94 \)

\( 8a = 94 - 14 \)

\( 8a = 80 \)

\( a = \frac{80}{8} \)

\( a = 10 \)

4. \( m + 6m - 5 = 72 \)

\( 7m - 5 = 72 \)

\( 7m = 72 + 5 \)

\( 7m = 77 \)

\( m = \frac{77}{7} \)

\( m = 11 \)

Ответ: а) x = 41; б) y = 19; в) a = 10; г) m = 11.