For the first number, we convert the improper fraction to a mixed number:
0. Divide 18 by 8:
2. The result is 2 with a remainder of 2 which we write as 2/8.
![(18)/(8)=2(2)/(8)](https://img.qammunity.org/2023/formulas/mathematics/college/ip9wnszq3cizbtklale6y39akenzjnfgoq.png)
Now, we can simplify this fraction
![(2)/(8)=(2\cdot1)/(2\cdot4)=(1)/(4)](https://img.qammunity.org/2023/formulas/mathematics/college/blims1ui1qhzc1eayw6futlftngdptopey.png)
Therefore, 18/8 written as a mixed number is:
![$$\boldsymbol{(18)/(8)=2(1)/(4)}$$](https://img.qammunity.org/2023/formulas/mathematics/college/8vvtfs3f1yc1uy1x0bq0bmgxt2ic19i6od.png)
For the second number, we convert the mixed number to an improper fraction:
![1(7)/(12)=(12\cdot1+7)/(12)=(12+7)/(12)=(19)/(12)](https://img.qammunity.org/2023/formulas/mathematics/college/ydhtt67g93t603detcxe69t1cs6bh6j1ka.png)
Therefore, 1 7/12 written as an improper fraction is:
![$$\boldsymbol{1(7)/(12)=(19)/(12)}$$](https://img.qammunity.org/2023/formulas/mathematics/college/86w0jwsmosdwbdn88x1ay9uwqe0oetttj8.png)