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प्रश्न
Evaluate: `((- 35)/39 xx (- 13)/7) - (7/90 xx (- 18)/14)`
योग
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उत्तर
`((- 35)/39 xx (- 13)/7) - (7/90 xx (- 18)/14)`
`= ((-5)xx (- 1))/(3 xx 1) - ((1 xx (-1))/(5 xx 2))`
`= 5/3 - (- 1/10)`
`= (5 xx 10)/(3 xx 10) + 1/(10 xx 3)`
`= (50 + 3)/30 = 53/30 = 1 23/30`
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