1.Find 5/9+(-8/13)+(-4/15)+9/20
2.Find -6/7×35/27×2/3×(-9/40)
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1 ) 5/9 + ( -8/13 ) + ( -4/15 ) + 9/20
- = 5/9 - 8/13 - 4/15 + 9/20
- = 5/9 + 9/20 - 8/13 - 4/15
- = 0.5 + 0.45 - 0.61 - 0.26
- = 0.95 - 0.87
- = 0.08 ( approx )
2 ) -6/7 x 35/27 x 2/3 x ( -9/40 )
- = - 0.85 x 1.29 x 0.6 x ( - 0.225 )
- = - 1.0965 x ( - 0.135 )
- = 0.1480275 ( approx )
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