Как решить уравнение : (y+13) : 4=20;

2 * (n-15) = 100;

432:r*8=9;

28*15-t=420;

(100+m) * 2=1996;

(у + 13) : 4 = 20 2 * (n - 15) = 100

у + 13 = 20 * 4, n - 15 = 100 : 2

у + 13 = 5 n - 15 = 50

у = 5 - 13 n = 50 + 15

у = - 8 n = 65

432 : r * 8 = 9 28 * 15 - t = 420

432 : r = 9 : 8 420 - t = 420

r = 432 : 9 : 8 t = 420 - 420

r = 6 t = 0

(100 + m) * 2 = 1996

100 + m = 1996 : 2

100 + m = 998

m = 998 - 100

m = 898