№4. Упростите выражение и подчеркните коэффициент: a)12a-8b-(-1,5c); б)11\(\frac{4}{7}\)x⋅(-\(\frac{2}{9}\)y)⋅2\(\frac{1}{3}\)y; 6)-3,8m (-1,6a)-(-3,5n); г)-29,4⋅(-\(\frac{2}{7}\)k)⋅(-\(\frac{1}{4}\)k)⋅\(\frac{3}{7}\)p.

№4. Упростите выражение и подчеркните коэффициент:

a) 12a ⋅ 8b ⋅ (-1,5c)

12 ⋅ 8 ⋅ (-1,5) ⋅ a ⋅ b ⋅ c = -144abc

Коэффициент: -144

б) 11\(\frac{4}{7}\)x ⋅ (-\(\frac{2}{9}\)y) ⋅ 2\(\frac{1}{3}\)y

\(\frac{81}{7}\)x ⋅ (-\(\frac{2}{9}\)y) ⋅ \(\frac{7}{3}\)y = -(\(\frac{81}{7}\) ⋅ \(\frac{2}{9}\) ⋅ \(\frac{7}{3}\)) ⋅ x ⋅ y^2 = -6xy^2

Коэффициент: -6

в) -3,8m ⋅ (-1,6a) ⋅ (-3,5n)

-3,8 ⋅ (-1,6) ⋅ (-3,5) ⋅ a ⋅ m ⋅ n = -21,28amn

Коэффициент: -21,28

г) -29,4 ⋅ (-\(\frac{2}{7}\)k) ⋅ (-\(\frac{1}{4}\)k) ⋅ \(\frac{3}{7}\)p

-29,4 ⋅ (-\(\frac{2}{7}\)) ⋅ (-\(\frac{1}{4}\)) ⋅ \(\frac{3}{7}\) ⋅ k ⋅ k ⋅ p = -0,9kp

Коэффициент: -0,9

Ответ: а) -144; б) -6; в) -21,28; г) -0,9