Question

r + 4.9 = 8.7
r =

Answer 1

u - 3 = 6.89
u=

Answer 2

To solve for \( r \) in the equation \( r + 4.9 = 8.7 \), you need to isolate \( r \).

Subtract 4.9 from both sides of the equation:

\[
r = 8.7 - 4.9
\]

Now, calculate the right side:

\[
r = 3.8
\]

So, \( r = 3.8 \).

Answer 3

To solve for \( u \) in the equation \( u - 3 = 6.89 \), you need to isolate \( u \).

Add 3 to both sides of the equation:

\[
u = 6.89 + 3
\]

Now, calculate the right side:

\[
u = 9.89
\]

So, \( u = 9.89 \).