Решите уравнения 1 вариант 1) 15x + 10 = 6x-8 2) 26x - 6 = 8x - 42 3) 11x + 15 = 7x - 25 4) 18x + 9=32x + 14 5)-2(x - 4) = 3 + 7x

Решение:

1. \( 15x + 10 = 6x - 8 \)
   \( 15x - 6x = -8 - 10 \)
   \( 9x = -18 \)
   \( x = \frac{-18}{9} \)
   \( x = -2 \)
2. \( 26x - 6 = 8x - 42 \)
   \( 26x - 8x = -42 + 6 \)
   \( 18x = -36 \)
   \( x = \frac{-36}{18} \)
   \( x = -2 \)
3. \( 11x + 15 = 7x - 25 \)
   \( 11x - 7x = -25 - 15 \)
   \( 4x = -40 \)
   \( x = \frac{-40}{4} \)
   \( x = -10 \)
4. \( 18x + 9 = 32x + 14 \)
   \( 18x - 32x = 14 - 9 \)
   \( -14x = 5 \)
   \( x = \frac{5}{-14} \)
   \( x = -\frac{5}{14} \)
5. \( -2(x - 4) = 3 + 7x \)
   \( -2x + 8 = 3 + 7x \)
   \( 8 - 3 = 7x + 2x \)
   \( 5 = 9x \)
   \( x = \frac{5}{9} \)

Ответ: 1) x = -2; 2) x = -2; 3) x = -10; 4) x = -5/14; 5) x = 5/9.