Please add addition, subtraction, multiplication, division, parentheses and brackets to make the result equal to one 1 2 3 4=1 1 2 3 4 5=1 1 2 3 4 5 6=1 1 2 3 4 5 6 7=1 1 2 3 4 5 6 7 8=1 (from grade five winter vacation P2)

Please add addition, subtraction, multiplication, division, parentheses and brackets to make the result equal to one 1 2 3 4=1 1 2 3 4 5=1 1 2 3 4 5 6=1 1 2 3 4 5 6 7=1 1 2 3 4 5 6 7 8=1 (from grade five winter vacation P2)

1* 2+ 3- 4=1
1 -2 +3+ 4- 5=1
1+ 2+ 3- 4+ 5- 6=1
(1 +2+ 3+ 4)/ 5+ 6- 7=1
(1+ 2 +3 -4+ 5- 6 +7)/ 8=1