Question

4+5x/1-5x-3+7x/2-7x
= 0​

Answer 1

Answer:

Hi ,

It is given that ,

( 2 - 7x )/( 1 - 5x ) = ( 3 + 7x )/( 4 + 5x )

Do the cross multiplication ,

( 2 - 7x )( 4 + 5x ) = ( 3 + 7x )( 1 - 5x )

2(4 + 5x)-7x(4+ 5x)=3(1-5x)+7x( 1 - 5x)

8+10x - 28x - 35x² = 3 - 15x+7x - 35x²

8 - 18x - 35x² = 3 - 8x - 35x²

8 - 18x = 3 - 8x

8 - 3 = - 8x + 18x

5 = 10x

5/10 = x

1/2 = x

Therefore ,

x = 1/2

I hope this helps you.

Answer 2

Answer:

Hi ,

It is given that ,

( 2 - 7x )/( 1 - 5x ) = ( 3 + 7x )/( 4 + 5x )

Do the cross multiplication ,

( 2 - 7x )( 4 + 5x ) = ( 3 + 7x )( 1 - 5x )

2(4 + 5x)-7x(4+ 5x)=3(1-5x)+7x( 1 - 5x)

8+10x - 28x - 35x² = 3 - 15x+7x - 35x²

8 - 18x - 35x² = 3 - 8x - 35x²

8 - 18x = 3 - 8x

8 - 3 = - 8x + 18x

5 = 10x

5/10 = x

1/2 = x

Therefore ,

x = 1/2

I hope this helps you.