Question

Solve the equation 2 over 5 (x − 4) = 2x for x

Answer 1

We have
2/5(x-4)=2x
multiply both sides by 5
2(x-4)=10x
we have
2x-8=10x
Let's use the symmetric property now
10x=2x-8
subtract both sides by 2x
8x=-8
divide both sides by 8
we get
x=-1

Answer 2

2/5x-4=2xfindx
10x2-8x-2=o
ab=20
b=8
f(10.-2)
10x2-10x)-(2x-2)
10x2-2andx-1
x=2/5andx=1