1000 +1000 +1000 +1000 + x = 5000
4000 + x = 5000
x = 5000 - 4000
x = 1000
1000+1000+1000+1000+x=5000
1000*4+x=5000
4000+x=5000
x=5000-4000
x=1000
1000 + 1000 + 1000 + 1000 + x = 5000
x = 4000 + x = 5000
x = 5000 - 4000
x = 1000
VẬY 1000 + 1000 + 1000 + 1000 +1000 = 5000