Решение:
Упростим выражения:
- \( c + 5c = 6c \)
- \( -3c + 6c = 3c \)
- \( -3c - 2c = -5c \)
- \( 2x + 3 + 12 = 2x + 15 \)
- \( -15x + 1,5x = -13,5x \)
- \( 0,1a - 2a + 5 = -1,9a + 5 \)
- \( 2b + 7b = 9b \)
- \( 1,3b - 4b = -2,7b \)
- \( b^2 + 4b^2 = 5b^2 \)
- \( -6x - 16x = -22x \)
- \( -2 + 9x - 9x = -2 \)
- \( 8,3 - d - 9 = -d - 0,7 \)
- \( 3x + 22x = 25x \)
- \( 7x - 4,2x = 2,8x \)
- \( 3x + 5x - 2 = 8x - 2 \)
- \( 2b + b - 2b^2 = 3b - 2b^2 \)
- \( -(2d+7) - 6d = -2d - 7 - 6d = -8d - 7 \)
- \( 2,4b + 3,7b - b = 6,1b - b = 5,1b \)
Ответ: 6c, 3c, -5c, 2x + 15, -13,5x, -1,9a + 5, 9b, -2,7b, 5b^2, -22x, -2, -d - 0,7, 25x, 2,8x, 8x - 2, 3b - 2b^2, -8d - 7, 5,1b.