Respuesta :

wegnerkolmp2741o

Answer:

-9/10 =r

Step-by-step explanation:

7/10=r-(-8/5)

Subtracting a negative is like adding

7/10=r+(8/5)

Subtract 8/5 from each side

7/10 - 8/5=r+(8/5) - 8/5

7/10 - 8/5 = r

Get a common denominator

7/10 - 16/10 = r

-9/10 =r

Answer:

Brainliest so that I can level up!

Step-by-step explanation:

7/10=r-(-8/5)  

7/10=r+8/5  

7/10 - 8/5= r + 8/5 - 8/5  

7/10 - 8/5 = r  

7/10 - 16/10 = r

-9/10 =r

r= - 0.9