Solve {l}{7m^{2}-m+2m-(-3m)}{-9p+2p-p}{a-(a+3a)}{6x+[x-(-2x)]}{12p+5p-(p-2p)}{(3x^{2}+5x-1)-(x^{2}-x+8)}{(m+5)-(2-m)}{y^{3}+3y^{2}+2y-11-2y^{3}+y^{2}+8}{x^2-14x+21+2x^2+5x-15}{3(a-4)-12(a-4)}{9(5+m)+(5+m)-8(5+m)}{18k-4k+11k-13k}{-13x-2y+6x-4y-9x}{32xy^2+19xy-24xy^2-8xy}{(3a-6b)-(a+b)+(3a-2b)}

$$\left. \begin{array} { l } { 7 m ^ { 2 } - m + 2 m - ( - 3 m ) } \\ { - 9 p + 2 p - p } \\ { a - ( a + 3 a ) } \\ { 6 x + [ x - ( - 2 x ) ] } \\ { 12 p + 5 p - ( p - 2 p ) } \\ { ( 3 x ^ { 2 } + 5 x - 1 ) - ( x ^ { 2 } - x + 8 ) } \\ { ( m + 5 ) - ( 2 - m ) } \\ { y ^ { 3 } + 3 y ^ { 2 } + 2 y - 11 - 2 y ^ { 3 } + y ^ { 2 } + 8 } \\ { x ^ { 2 } - 14 x + 21 + 2 x ^ { 2 } + 5 x - 15 } \\ { 3 ( a - 4 ) - 12 ( a - 4 ) } \\ { 9 ( 5 + m ) + ( 5 + m ) - 8 ( 5 + m ) } \\ { 18 k - 4 k + 11 k - 13 k } \\ { - 13 x - 2 y + 6 x - 4 y - 9 x } \\ { 32 x y ^ { 2 } + 19 x y - 24 x y ^ { 2 } - 8 x y } \\ { ( 3 a - 6 b ) - ( a + b ) + ( 3 a - 2 b ) } \end{array} \right.$$

Evaluate

$$m\left(7m+4\right),\ -8p,\ -3a,\ 9x,\ 18p,\ 2x^{2}+6x-9,\ 2m+3,\ -y^{3}+4y^{2}+2y-3,\ 3\left(x^{2}-3x+2\right),\ 9\left(4-a\right),\ 2\left(m+5\right),\ 12k,\ 2\left(-8x-3y\right),\ xy\left(8y+11\right),\ 5a-9b$$