Упростите выражения: 18m+22m 12y-7y 12x+12x-6x c+14c 25t-13t 13y-y-y 4x+x 17k-k 3a-3a+8a

Упростим: 18 * m + 22 * m = m * (18 + 22) = m * (20 + 20) = m * 40 = 40 * m; 12 * y - 7 * y = y * (12 - 7) = y * 5 = 5 * y; 12 * x + 12 * x - 6 * x = x * (12 + 12 - 6) = x * (12 + 6) = x * 18 = 18 * x; c + 14 * c = c * (1 + 14) = 15 * cc; 25 * t - 13 * t = t * (12 - 13) = 12 * t; 13 * y - y - y = y * (13 - 1 - 1) = 11 * y; 4 * x + x = x * (4 + 1) = 5 * x; 17 * k - k = k * (17 - 1) = 16 * k; 3 * a - 3 * a + 8 * a = a = (3 - 3 + 8) = 8 * a.