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Answer:

r = [tex]\frac{-9}{10}[/tex]

Step-by-step explanation:

Step 1: Convert symbols

7/10 = r + 8/5

Step 2: Subtract 8/5 on both sides

r = 7/10 - 8/5

Step 3: Combine like terms

r = -9/10

And we have our final answer!

Answer:

[tex]r=\frac{-9}{10}[/tex]

Step-by-step explanation:

[tex]\frac{7}{8}=r-(\frac{-8}{5})[/tex]

opening bracket will change the sign

[tex]\frac{7}{10}=r+\frac{8}{5}[/tex]

in oreder to find the value of subtract [tex]\frac{8}{5}[/tex]  on both sides

[tex]\frac{7}{10} - \frac{8}{5}[/tex]=r

taking LCM

[tex]\frac{7}{10}-\frac{8*2}{5*2}[/tex]=r

[tex]\frac{7}{10}-\frac{16}{10}=r[/tex]

[tex]\frac{-9}{10}=r[/tex]

i hope it will help you :)

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