Question

Use a properly of equality to solve this equation: 4.5x = 18

Answer 1

To solve the equation you can use the property of the multiplicative inverse, like this

`\begin{gathered} 4.5x=18​ \\ (1)/(4.5)\cdot4.5x=18​\cdot(1)/(4.5) \end{gathered}`

Dividing by 4.5 into both sides of the equation is the same as multiplying by the multiplicative inverse of 4.5 on both sides of the equation

`x=(18)/(4.5)`

Therefore,

`x=4`