Question

If the length of FH is 18 units, what is the value of x?

Answer 1

Well if FG is 4x and GH is 2x the you add them to get 6x for FH. Solve for x so 6x=18 which means x=3. Hope this helps

Answer 2

we know that

$FH=FG+GH$

In this problem we have

$FH=18\ units\\FG=4x\\GH=2x$

substitute in the formula above

$18=4x+2x$

solve for x

$6x=18$

$x=18/6$

$x=3\ units$

therefore

the answer is

The value of x is $3\ units$