Complete the steps to solve for X
please say sloving steps

see below

Step-by-step explanation:

2/5x - 1/4x = 3

Get a common denominator of 20

2/5x *4/4  - 1/4x *5/5 =3

8/20 x   - 5/20x  =3

3/20x = 3

Multiply by 20/3 to isolate x

20/3 * 3/20 x = 20/3 * 3

x = 20

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4

care to share were the trapezoid shown is ?