add the following using suitable properties a) (-13/20)+11/14+(-5/7)-7/10 b) 4/5+ - (-8/9) +(-5/15) +1/3
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For (a)
(-13/20)+11/14+(-5/7)-7/10
- (-13/20)+11/14-5/7-7/10
- [-91+110-100-98]/140
- [-189+110-100]/140
- [-289+110]/140
- [-179/140]
- so -179/140
For (b)
- 4/5+-(-8/9)+(-5/15)+1/3
- 4/5+8/9-5/15+1/3
- [36+40-15+15]/45
- [76-0]/45
- so 76/45
i hope this will help u!
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