Question

Решите:
2,4:(5/16 - (3/4)в квадрате)
3x+7y-6x-4y
8a+(5-a)-(7+11a)
4-5(3c+8)
-3/5 x=15

Answer 1

$2.4 div ( frac{5}{16} - ( frac{3}{4} ) {}^{2} ) \ \ frac{12}{5} div ( frac{5}{16} - frac{9}{16}) \ \ frac{12}{5} div ( - frac{1}{4} ) \ \ - frac{12}{5} times 4 \ \ - frac{48}{5 } \ \ - 9 .6 \ \ 3x + 7y - 6x - 4y \ - 3x + 3y \ - 3(x - y) \ \ 8a + (5 - a) - (7 + 11a) \ 8a + 5 - a - 7 - 11a \ - 4a - 2 \ - 2(2a + 1) \ \ 4 - 5(3c + 8) \ 4 - 15c - 40 \ - 36 - 15c \ \ - frac{3}{5} x = 15 \ \ - frac{5}{3} times ( - frac{3}{5} x) = - frac{5}{3 } times 15 \ \ frac{1}{3} times 3x = - frac{5}{3} times 15 \ \ x = - frac{5}{3} times 15 \ \ x = - 5 times 5 \ x = - 25$