Answer:
![(43)/(100)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/x5u658copi75j99cuym34i7y55640tk0cc.png)
Explanation:
![(4)/(10)+(3)/(100)](https://img.qammunity.org/2020/formulas/mathematics/college/qfx4zksw6kojczz8ucg5ugcd7hcq1n26qb.png)
What we're going to want to do here is make the bases (the bottom numbers) equal to each other before you add.
We do this by multiplying 4/10 by 10/10, which we can do because we're technically multiplying something by 1, which doesn't ever change anything.
![((4)/(10)*(10)/(10))+(3)/(100)](https://img.qammunity.org/2020/formulas/mathematics/college/pu1qd7dz59jdzouqcpqi5xzxg958voiqrg.png)
simplify
![(40)/(100)+(3)/(100)](https://img.qammunity.org/2020/formulas/mathematics/college/qyn3dy3g61isibvunkpkgrn3hlazbl79ah.png)
Now that the bases are the same, we can add the top values.
![(40)/(100) +(3)/(100)=(43)/(100)](https://img.qammunity.org/2020/formulas/mathematics/college/nka0x56ta0t3mfbgh6bplgiw6ghkk6l6oy.png)