Question

n - (n - 1)/2 = 1 - (n - 2)/3​

Answer 1

• n-(n-1)/2=1-(n-2)/3
• (2n-n-1)/2=(3-n-2)/3. by cross multiplication
• (n-1)/2=(1-n)/3 by simplifying
• 3(n-1)=2(1-n) by cross multiplication
• 3n-3=2-2n by simplifying
• 3n+2n=2+3(by bringing variables and constants together)
• 5n=5
• n=5/5
• n=1