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2/5x - 5/2x = 1/10
4x -25x / 10x² = 1/10
-210x = 10x²
10x²+210x = 0
10x(x + 21) = 0
10x = 0 or x+21 = 0
x= 0 or x = -21
but here X= 0 is rejected as by substituting this we get zero in the denominator which is not defined.
so,
x= -21
priya427326:
how did 210 come to this answer
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x = 0 or -21
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