Solve for x (isolate/get x by itself)
Add 5 on both sides

Subtract 1/4x on both sides

Make the denominators the same of the fractions in order to combine them. Multiply 2 to the top and bottom of 1/4x

Multiply 8 on both sides

-16 = x
The answer would be:
3 + 3 + 3 + 3...
... If you mean what I'm thinking.
:)
Length=x
Width=4x
4x•x=400 sq cm
x= 10 cm
4x= 40 cm
P=2•10cm+2•40 cm
=100 cm
20
Triangles are 180 total so just add 118 and 22 then subtract it from 180 for your answer
The answer for this equation is 25