Question

Solve for x: 2 over 5 (x - 2) = 4x.

2 over 9

9

negative 2 over 9

negative 9 over 2

Answer 1

\[\frac{ 2 }{ 5(x-2) }=4x\]
expand the denominator first
\[\frac{ 2 }{ 5x - 10 } = 4x\]
now u can bring the 5x-10 over to the RHS by reverse operation so we will have to times 4x.

2 = 4x(5x-10)
2 = 20x^2 - 40x
20x^2 - 40x - 2 = 0
divide everything by 2
10x^2 - 20x - 1 = 0

Answer 2

u should be able to use a graphic calculator for this question so just use the calc to solve the last part.

Answer 3

its 2 over 5 not 2 over 5 with the x and etc