Question

Given an isosceles triangle whose angle measures are 2x, 4x and 4x, calculate the value of x so that the sum of the angle measures is 180 degrees.

Answer 1

You can make an equation: \[2x+4x+4x=180\] Then you can combine like terms... \[10x = 180\] Then ... \[\frac{ 10x }{ 10 }=\frac{ 180 }{ 10 }=18 = x\]

The value of x = 18. And you can check this by substituting x with 18 ...
\[2(18)+4(18)+4(18)=180\]
Then once you simplify the above, you get ...
180 = 180

So, the value of x = 18.

That's how I do it.