Question

помогите плиз
решить уравнения
плиз
дам 15 балов ✨

Answer 1

1)
$17n - 11n - 2n = 511 \\ 4n = 511 \\ n = \frac{511}{4}$
2)
$23a - 8a - 13a = 33 \\ 2a = 33 \\ a = \frac{33}{2}$
3)
$4x + 6x - x = 21.6 \\ 9x = 21.6 \\ x =21.6 \div 9 = 2.4$
4)
$7y - y + 3y = 61.2 \\ 9y = 61.2 \\ y = 61.2 \div 9 = 6.8$