The answer is 1 37/100
I made the 8 in 0.87 into 8/10
And since its in tenths 10 would be its denominator.
I did he same thing to the 7, and since its in hundreths it will be 7/100
We just need to add 8/10 to 7/100
I'm sure you already know how to add fractions so the answer will be 87/100
I forgot about the 1/2 so you just always ad it to 87/100 so the answer will be 137/100.
To simplify it just divide 100 to 137.
The answer will be 1.37.
You will make the 1 as a whole number and the 37 into numerator.
Your denominator will 100 so the answer is 1 37/100