Question

please solve it please step by step explanation ​

Answer 1

Answer:

9. 1) 1=1/2{1×(1+1)}.

1=1/2{1×(2)}. (Because 1+1=2).

1=1/2{2}. (Because 1×2=2).

1=1. (Because divide by 2 will be 1 & multiply by 2 will be 1 i.e., 2×1 & 2×1 which will be 1×1=1).

2) 1+2=1/2{2×(2+1)}.

3=1/2{2×(3)}. (Because 2+1=3).

3=1/2{6}. (Because 2×3=6).

3=3. (Because divide by 2 will be 1 & multiply by 6 will be 3 i.e., 2×1 & 2×3 which will be 1×3=3).

3) 1+2+3=1/2{3×(3+1)}.

6=1/2{3×(4)}. (Because 3+1=4).

6=1/2{12). (Because 3×4=12).

6=6. (Because divide by 2 will be 1 & multiply by 12 will be 6 i.e., 2×1 & 2×6 which will be 1×6=6).

4) 1+2+3+4=1/2{4×(4+1)}.

10=1/2{4×(5)}. (Because 4+1=5).

10=1/2{20}. (Because 4×5=20).

10=10. (Because divide by 2 will be 1 & multiply by 20 will be 10 i.e., 2×1 & 2×10 which will be 1×10=10).

Sorry I didn't understand next question.

I think this is your answer.