Упростите выражение и подчеркните коэффициенты:

1) 0,125a * (-4b) * (-2c) ;

2) - 3/4x * (-2/3y) * (1/2z) ;

3) - 0,15k * (-4m) * (-5n) ;

4) - 6/7a * (5/6b) * (-4/5c) * (-3/4d).

1) 0,125*a = a*1/8

(-4) b * (-2) c=8bc

a * (1/8) * 8bc=abc

2) (-2/3) y * (-3/4) x = (1/2) * xy

xy * (1/2) * (1/2) z = (1/4) * xyz

3) - 0,15k = (-3/20) * k

(-4) m * (-5) n=20mn

20mn * (-3/20) k=-3kmn

4) - 6/7a * (5/6b) = - 5/7ab

-5/7ab * (-4/5c) = 4/7abc

4/7abc * (-3/4d) = - 3/7abcd