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polytin02
@polytin02
August 2022
1
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1. Решить уравнение: /-это дробная черта.
а) S-1/3=-7/12
б) 3 5/7+w=2 8/21
в) z-(-4 7/27)=6 5/9
г) 18,24-y=20
д) b-2,2=-3,3
2. Найти расстояние между точками:
а) F(-5,2) и B(-1,8)
б) M(-2/3) и N(-3/4)
в) C(-5/6) и V(-7/12)
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gorodni4ev
А) s - 1/3=-7/12
s=-7/12+1/3=-7/12+4/12=-3/12
s=-1/4
б) 3 5/7+w= 2 8/21
w=2 8/21- 3 5/7 = 2 8/21 - 3 15/21 = 50/21-78/21=-28/21=-4/3=-1 1/3
в) z-(-4 7/27)=6 5/9
z=6 5/9 - 4 7/27=6 15/27 - 4 7/27=2*(3 15/27-2 7/27)=2*(96/27-61/27)=2*35/27
z=2*1 8/27=2 8/27
г) 18,24-у=20
у=18,24-20= - 1,76
д) б- 2,2=-3,3
б=-3,3+2,2= -1,1
№2
а) -1,8-(-5,2)=3,4
б) -2/3-(-3/4)=-8/12-(-9/12)=1/12
в) -7/12-(-5/6)=-7/12-(-10/12)=-7/12+10/12=3/12
2 votes
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polytin02
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Answers & Comments
s=-7/12+1/3=-7/12+4/12=-3/12
s=-1/4
б) 3 5/7+w= 2 8/21
w=2 8/21- 3 5/7 = 2 8/21 - 3 15/21 = 50/21-78/21=-28/21=-4/3=-1 1/3
в) z-(-4 7/27)=6 5/9
z=6 5/9 - 4 7/27=6 15/27 - 4 7/27=2*(3 15/27-2 7/27)=2*(96/27-61/27)=2*35/27
z=2*1 8/27=2 8/27
г) 18,24-у=20
у=18,24-20= - 1,76
д) б- 2,2=-3,3
б=-3,3+2,2= -1,1
№2
а) -1,8-(-5,2)=3,4
б) -2/3-(-3/4)=-8/12-(-9/12)=1/12
в) -7/12-(-5/6)=-7/12-(-10/12)=-7/12+10/12=3/12