Example

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

Question

$$5x-9=3x+6$$

Answer

x=15/2

Solution


Add \(9\) to both sides.
\[5x=3x+6+9\]
Simplify  \(3x+6+9\)  to  \(3x+15\).
\[5x=3x+15\]
Subtract \(3x\) from both sides.
\[5x-3x=15\]
Simplify  \(5x-3x\)  to  \(2x\).
\[2x=15\]
Divide both sides by \(2\).
\[x=\frac{15}{2}\]

Decimal Form: 7.5

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