Упростите выражение.
1) 2a * 14 = (2 * 14) * a =
2) 7 * 6m =
3) 4a * 9b =
4) 5x * 3y * 4z =
2a * 14 = (2 * 14) * a = 28 * a = 28a
7 * 6m = (7 * 6) * m = 42 * m = 42m
4a * 9b = (4 * 9) * (a * b) = 36 * ab = 36ab
5x * 3y * 4z = (5 * 3 * 4) * (x * y * z) = (20 * 3) * xyz = 60 * xyz = 60xyz