Question

3x + 5 / 7x - 4 = 2/5
solve the equation and verify the answer​

Answer 1

Step-by-step explanation:

$heloo... \\ \\ \frac{3x + 5}{7x - 4} = \frac{2}{5} \\ 3(3x + 5) = 2(7x - 4) \\ 9x + 15 = 14x - 8 \\ 14x - 9x = 15 + 8 \\ 5x = 23 \\ x = \frac{23}{5}$

$heloo... \\ \\ \frac{3x + 5}{7x - 4} = \frac{2}{5} \\ 3(3x + 5) = 2(7x - 4) \\ 9x + 15 = 14x - 8 \\ 14x - 9x = 15 + 8 \\ 5x = 23 \\ x = \frac{23}{5} \\ \\ verification = > \\ \\ \frac{3x + 5}{7x - 4} = \frac{2}{5} \: \\ put \: x = \frac{23}{5} \\ \\ \frac{3 \times \frac{23}{5} + 5}{7 \times \frac{23}{5} - 4} = \frac{2}{5} \\ \frac{ \frac{69}{5} + 5}{ \frac{161}{5} - 4} = \frac{2}{3} \\ \frac{ \frac{94}{5} }{ \frac{ 144}{5} } = \frac{2}{3} \\ \\ \frac{2}{3} = \frac{2}{3} \\ \\ verified..$

Answer 2

Answer:

The question : 3x +5/7x -4=2/5

Answer : by cross multiplication we will get 5(3x+5)=2(7x-4)

= 15x + 25 = 14x - 8

= 15x - 14x = -8 - 25

= x = -33

Hope this helps u

:))