t=int(input())
for _ in range(t):
x,y,n=map(int,input().split())
temp=n%x
while True:
if temp==y:
print(n)
break
else:
if y<temp:
print(n-temp+y)
break
else:
temp+=x#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define ll long long
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
ll sum,mx,mn,n,m,k,d,i,j,t,ans,a,b,c,x,y,l,r;
string s,s1,s2;
char ch;
int main(){
ios::sync_with_stdio(0);
cin.tie(0),cout.tie(0);
t=1;cin>>t;
while(t--){
cin>>a>>b>>c;
if(c-c%a+b<=c){
cout<<c-c%a+b<<endl;
}else{
cout<<c-c%a-(a-b)<<endl;
}
}
}
1373C - Pluses and Minuses | 1173B - Nauuo and Chess |
318B - Strings of Power | 1625A - Ancient Civilization |
864A - Fair Game | 1663B - Mike's Sequence |
448A - Rewards | 1622A - Construct a Rectangle |
1620A - Equal or Not Equal | 1517A - Sum of 2050 |
620A - Professor GukiZ's Robot | 1342A - Road To Zero |
1520A - Do Not Be Distracted | 352A - Jeff and Digits |
1327A - Sum of Odd Integers | 1276A - As Simple as One and Two |
812C - Sagheer and Nubian Market | 272A - Dima and Friends |
1352C - K-th Not Divisible by n | 545C - Woodcutters |
1528B - Kavi on Pairing Duty | 339B - Xenia and Ringroad |
189A - Cut Ribbon | 1182A - Filling Shapes |
82A - Double Cola | 45A - Codecraft III |
1242A - Tile Painting | 1663E - Are You Safe |
1663D - Is it rated - 3 | 1311A - Add Odd or Subtract Even |