Задание
Развернуть задание
Раскрыть скобки и упростить:
1) 3a – (a + 2b)
2) 5x – (2y – 3x)
3) 3m – (5m – (2m – 1))
4) 4a + (2a – (3a + 2))
1) 3a – (a + 2b)
2) 5x – (2y – 3x)
3) 3m – (5m – (2m – 1))
4) 4a + (2a – (3a + 2))
Развернуть задание
Новое решение
Решение
1) 3a – (a + 2b) = 3a – a – 2b = 2a – 2b
2) 5x – (2y – 3x) = 5x - 2y + 3x = 8x – 2y
3) 3m – (5m – (2m – 1)) = 3m – 5m + (2m – 1) = -2m + 2m – 1 = -1
4) 4a + (2a – (3a + 2)) = 4a + 2a – (3a + 2) = 6a – 3a - 2 = 3a - 2
2) 5x – (2y – 3x) = 5x - 2y + 3x = 8x – 2y
3) 3m – (5m – (2m – 1)) = 3m – 5m + (2m – 1) = -2m + 2m – 1 = -1
4) 4a + (2a – (3a + 2)) = 4a + 2a – (3a + 2) = 6a – 3a - 2 = 3a - 2
1) 3a – (a + 2b) = 3a – a – 2b = 2a – 2b
2) 5x – (2y – 3x) = 5x - 2y + 3x = 8x – 2y
3) 3m – (5m – (2m – 1)) = 3m – 5m + (2m – 1) = -2m + 2m – 1 = -1
4) 4a + (2a – (3a + 2)) = 4a + 2a – (3a + 2) = 6a – 3a - 2 = 3a - 2
2) 5x – (2y – 3x) = 5x - 2y + 3x = 8x – 2y
3) 3m – (5m – (2m – 1)) = 3m – 5m + (2m – 1) = -2m + 2m – 1 = -1
4) 4a + (2a – (3a + 2)) = 4a + 2a – (3a + 2) = 6a – 3a - 2 = 3a - 2