1) 295,1: (n-3) = 13 2) 34 * (m+1,2) = 61,2 3) 15 * (k-0,2) = 21

Найдем корни.

1) 295,1 / (n - 3) = 13;

13 * (n - 3) = 295.1;

n - 3 = 295.1/3;

n - 3 = 2951/30;

n = 2951/30 + 3;

n = 2951/30 + 90/30;

n = 3041/30.

2) 34 * (m + 1,2) = 61,2;

m + 1.2 = 61.2/34;

m + 1.2 = 1.8;

m = 1.8 - 1.2;

m = 0.6.

3) 15 * (k - 0,2) = 21;

k - 0.2 = 21/15;

k - 0.2 = 7/5;

k - 0.2 = 1.2;

k = 1.2 + 0.2;

k = 1.4.