Question

(4+x) (5-x) ÷ (2+x) (7-x) = 1
find x. please explain by full method.
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Answer 1

Step-by-step explanation:

(4+X) (5-x) =1* (2+X) (7-x)

(4+X) (5-x) = (2+X) (7-x)

4(5-x) +X(5-x) = 2 (7-x) +X (7-x)

20-4x +5x -xx = 14-2x +7x-xx

20+X = 14 +5x +XX -xx

20-14 = 5x-x

6 = 4x

3/2 = x