Question

$$\frac{2x-1}{3}+\frac{4x+2}{2}-x+\frac{7}{2}=\underline{3x}$$

Answer

x=25/8

Solution


Factor out the common term \(2\).
\[\frac{2x-1}{3}+\frac{2(2x+1)}{2}-x+\frac{7}{2}=3x\]
Cancel \(2\).
\[\frac{2x-1}{3}+2x+1-x+\frac{7}{2}=3x\]
Simplify  \(\frac{2x-1}{3}+2x+1-x+\frac{7}{2}\)  to  \(\frac{2x-1}{3}+x+\frac{9}{2}\).
\[\frac{2x-1}{3}+x+\frac{9}{2}=3x\]
Multiply both sides by \(3\).
\[2x-1+3x+\frac{27}{2}=9x\]
Simplify  \(2x-1+3x+\frac{27}{2}\)  to  \(5x+\frac{25}{2}\).
\[5x+\frac{25}{2}=9x\]
Subtract \(5x\) from both sides.
\[\frac{25}{2}=9x-5x\]
Simplify  \(9x-5x\)  to  \(4x\).
\[\frac{25}{2}=4x\]
Divide both sides by \(4\).
\[\frac{\frac{25}{2}}{4}=x\]
Simplify  \(\frac{\frac{25}{2}}{4}\)  to  \(\frac{25}{2\times 4}\).
\[\frac{25}{2\times 4}=x\]
Simplify  \(2\times 4\)  to  \(8\).
\[\frac{25}{8}=x\]
Switch sides.
\[x=\frac{25}{8}\]

Decimal Form: 3.125