Question

what 2 5/8+1 3/8 mixes numbers and 7 1/4+2 3/4 mixed numbers and 2 2/5+4 2/5 mixed numbers 4 1/4+1 1/8

Answer 1

`2(5)/(8)+1(3)/(8)=2+(5)/(8)+1+(3)/(8)=(2+1)+\left((5)/(8)+(3)/(8)\right)=3+(5+3)/(8)\\\\=3+(8)/(8)=3+1=4\\---------------------\\7(1)/(4)+2(3)/(4)=7+(1)/(4)+2+(3)/(4)=(7+2)+\left((1)/(4)+(3)/(4)\right)=9+(1+3)/(4)\\\\=9+(4)/(4)=9+1=10\\------------------\\2(2)/(5)+4(2)/(5)=2+(2)/(5)+4+(2)/(5)=(2+4)+\left((2)/(5)+(2)/(5)\right)=6+(2+2)/(5)\\\\=6+(4)/(5)=6(4)/(5)\\-------------------`

`4(1)/(4)+1(1)/(8)=4+(1)/(4)+1+(1)/(8)=(4+1)+\left((1)/(4)+(1)/(8)\right)=5+\left((1\cdot2)/(4\cdot2)+(1)/(8)\right)\\\\=5+\left((2)/(8)+(1)/(8)\right)=5+(2+1)/(8)=5+(3)/(8)=5(3)/(8)`