Question

(4+x)(5-x)÷(2+x)(7-x)=1​

Answer 1

Answer:

( 4 + x ) ( 5 - x ) ÷ ( 2 + x ) ( 7 - x ) = 1​

= x +9  divide by 9 + x = 1

                                  x = 1 x -9 x-9

                                     = 81

x + 9 divide by 9 + x = 1

= 81 + 9 divide by 9 +81 = 1

= 90 divide by 90 = 1

hope it helps u...............

Answer 2

Answer:

1.43=1

(4+x)×(5−x)÷(2+x)(7−x)=1

20−4x+5x−x

2

÷14−2x+5x−x

2

=1

x

2

−9x+20÷x

2

−9x+14=1

1.43=1