выполните значение выражения: 1) 2/15+(-3/10) 2) -2/3+13/15 3) 13/16+(-9/32) 4) -4 5/9+(-7 1/6) 5)-5 7/8+(-6 3/10). Created by shcola42. matematika-ru

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выполните значение выражения: 1) 2/15+(-3/10)
2) -2/3+13/15
3) 13/16+(-9/32)
4) -4 5/9+(-7 1/6)
5)-5 7/8+(-6 3/10)

Answers & Comments

mokrushina85 1) 2/15+(-3/10)= 4/30+(-9/30)=-5/30= -1/6

2) -2/3+13/15= -10/15+13/15= 3/15=1/5

3) 13/16+(-9/32)= 26/32+(-9/32)= 17/32

4) -4 5/9+(-7 1/6)= -4 10/18+(-7 3/18)= -11 13/18

5)-5 7/8+(-6 3/10)=-5 35/40+(-6 12/40)= -12 7/40

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