来自候琳熙的问题
【1.去括号-（2m-3）n-3(4-2m)16a-8(3b+4c)t+2/3(12-9v)-(5m+n)-7(a-3b)-1/2(x+y)+1/4(p+q)-8(3a-2ab+4)4(m+p)-7(n-2q)2.化简-2n-(3n-1)a-(5a-3b)+(2b-a)-3(2s-5)+6s1-(2a-1)-(3a+3)3(-ab+2a)-3a-b14(abc-2a)+3(6a-2abc)3(xy-2z)+(-xy+3z)-4(pq+pr)+(】
1.去括号
-（2m-3）n-3(4-2m)16a-8(3b+4c)t+2/3(12-9v)-(5m+n)-7(a-3b)-1/2(x+y)+1/4(p+q)
-8(3a-2ab+4)4(m+p)-7(n-2q)
2.化简
-2n-(3n-1)a-(5a-3b)+(2b-a)-3(2s-5)+6s1-(2a-1)-(3a+3)3(-ab+2a)-3a-b
14(abc-2a)+3(6a-2abc)3(xy-2z)+(-xy+3z)-4(pq+pr)+(4pq+pr)
