Ответ:
Решение:
- a) (7x + 1) - (6x + 3) = 5
\( 7x + 1 - 6x - 3 = 5 \)
\( x - 2 = 5 \)
\( x = 7 \) - б) (8x + 11) - 13 = 9x - 5
\( 8x + 11 - 13 = 9x - 5 \)
\( 8x - 2 = 9x - 5 \)
\( -2 + 5 = 9x - 8x \)
\( 3 = x \)
Ответ: x = 7; x = 3.
Ответ: x = 7; x = 3.