Question

3 1⁄8 − 1 7⁄8 = ⁄8 (Write your answer as a mixed number.)

Answer 1

I think the answer is 1 2/8

Answer 2

Explanation:

`\bold{METHOD\ 1}\\\\3(1)/(8)=2+1(1)/(8)=2+(9)/(8)=2(9)/(8)\\\\3(1)/(8)-1(7)/(8)=2(9)/(8)-1(7)/(8)=(2-1)+(9-7)/(8)=1+(2)/(8)=1(2:2)/(8:2)=1(1)/(4)`

`\bold{METHOD\ 2}\\\\3(1)/(8)-1(7)/(8)=(3-1)+(1-7)/(8)=2+(-6)/(8)=2-(6)/(8)=1(8)/(8)-(6)/(8)=1(8-6)/(8)=1(2)/(8)=1(1)/(4)`

`\bold{METHOD\ 3}\\\\\text{convert to the decimal:}\\\\3(1)/(8)=3+(1:8)=3+0.125=3.125\\\\1(7)/(8)=1+(7:8)=1+0.875=1.875\\\\3(1)/(8)-1(7)/(8)=3.125-1.875=1.25=1(25)/(100)=1(25:25)/(100:25)=1(1)/(4)`