Question

Andre says that 5 3/4 + 2 1/2 =7 1/2 because 7 4/8 = 8 1/2. Identify his mistake. Draw a picture to prove that he is wrong.

Answer 1

`5(3)/(4)+2(1)/(2)=5(3)/(4)+2(2)/(4)=7(5)/(4)=8(1)/(4)\\\\mistake:\\\\5(3)/(4)+2(1)/(2)=5(3)/(4)+2(1)/(4)=5+2+(3+1)/(4+4)=7(4)/(8)=7(1)/(2)`