-(2m-3) =-2m+3
n-3(4-2m) =n-12+6m
16a-8(3b+4c) =16a-24b-32c
t+3分之2(12-9v)=t+8-6v
-(5m+n)-7(a-3b)=-5m-n-7a+21b
-2分之1(x+y)+4分之1(p+q) =-2分之1x-2分之y+4分之1p+4分之q
-8(3a-2ab+4)=-24a+16ab-32
4(m+p)-7(n-2q)=4m+4p-7n+14q
-(2m-3) =-2m+3
n-3(4-2m) =n-12+6m
16a-8(3b+4c) =16a-24b-32c
t+3分之2(12-9v)=t+8-6v
-(5m+n)-7(a-3b)=-5m-n-7a+21b
-2分之1(x+y)+4分之1(p+q) =-2分之1x-2分之y+4分之1p+4分之q
-8(3a-2ab+4)=-24a+16ab-32
4(m+p)-7(n-2q)=4m+4p-7n+14q