Which expression does NOT equal 4/5?
4 x 1/5
2 + 2/5
1/5 + 1/5 + 1/5 + 1/5
2 x 2/5
4 x 1/5
2 + 2/5
1/5 + 1/5 + 1/5 + 1/5
2 x 2/5