Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$-y+9=8$$

Answer

y=1

Solution


Regroup terms.
\[9-y=8\]
Subtract \(9\) from both sides.
\[-y=8-9\]
Simplify  \(8-9\)  to  \(-1\).
\[-y=-1\]
Multiply both sides by \(-1\).
\[y=1\]
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