Question

5x + 3 = 7x - 1Find x

Answer 1

Adding 1 to the given equation we get:

`\begin{gathered} 5x+3+1=7x-1+1, \\ 5x+4=7x\text{.} \end{gathered}`

Subtracting 5x from the above equation we get:

`\begin{gathered} 5x+4-5x=7x-5x, \\ 4=2x\text{.} \end{gathered}`

Finally, dividing by 2 we get:

`\begin{gathered} (4)/(2)=(2x)/(2), \\ 2=x\text{.} \end{gathered}`

Answer: x=2.