Danny made a mistake in the following problem.
The mistake was made in Line ___. Only input the number of the first incorrect line.
Line 1
21 + 35 ÷ 7 + 6(2)
Line 2
21 + 5 + 6(2)
Line 3
21 + 11(2)
Line 4
21 + 22
Line 5
43
The mistake was made in Line ___. Only input the number of the first incorrect line.
Line 1
21 + 35 ÷ 7 + 6(2)
Line 2
21 + 5 + 6(2)
Line 3
21 + 11(2)
Line 4
21 + 22
Line 5
43
