# Geometry homework problem help

Stratosphere

## Homework Statement

Point M is the midpoint of RT ( with the lin on top of RT).RM = x and RT = 4x-6. Find the value of x.

## The Attempt at a Solution

I wrote out the equation (RT=4x-6)/2=RM but I am not sure if this is the right approach.

Stratosphere

A little help would be greatly appreciated.

Homework Helper
Gold Member

You have an expression for the full length measure and you have an expression for half of that full length measure. You only have one variable.

Stratosphere

What should I do though? Do I have to isolate the x? I have two variables thought RT and x.

Last edited:
alligatorman

You know that RT= 4x-6.

You should be able to get an equation with one variable.

yeongil

And since RM = x, the equation would simply be
$$\frac{4x - 6}{2} = x$$
so yes, there is just one variable.

01

## Homework Statement

Point M is the midpoint of RT ( with the lin on top of RT).RM = x and RT = 4x-6. Find the value of x.

## The Attempt at a Solution

I wrote out the equation (RT=4x-6)/2=RM but I am not sure if this is the right approach.

You basically said the answer. Equality is commutative.

if x = RM then RM = x for all R,M,x

Homework Helper