1: =>x=-5/3-1/2=-13/6
2: =>x=1/3-3/5=-4/15
4: =>x=-7/9+4/3=-7/9+12/9=5/9
5: =>x=5/6-7/3=5/6-14/6=-9/6=-3/2
6: =>x=9/10+1/5=11/10
7: =>x=3/8-5/12=36/96-40/96=-1/24
8: Đề sai rồi bạn
1) x+1/2=-5/3
2) 1/3-x=3/5
4) x-4/3=-7/9
5) x--7/3=5/6
6) x-1/5=9/10
7) x+5/12=3/8
8) x+5/4=7/6
9) x-2/7=1/35
10) x-2/7=-7/10
1) x+1/3=-7/3 4) 2/3+x=7/3
2) 1/8-x=3/8 5) x--7/3=5/3
3) x-4/5=6/5
6) x-1/2=9/2
7) x+5/4=-3/4
8) x+2/7=5/7
9) x-4/3=1/3
10) x+5/2=-7/2
1.Tính tổng:
S=x+|x|+x+|x|+x+|x|+x+|x|+x+|x|+x
2.Tính tổng
S1=1+(-2)+3+(-4)+...+(-2018)
S2=1+(-3)+5+(-7)+...+(+2001)
S3=1+(-2)+(-3)+4+5+(-6)+(-7)+8+9
1tim x ∈ Z thoa man
a)/x/+/-5/=/-37/ b)/-6/./x/=/54/
c)/x/>21 d)/x/<-1
2tim x
a)x+3=/-3/+/-7/ b)-2</x/<2
-12.(x-5)+ 7.(3-x)=5 Giúp mik với
