a, \(\left|x-5\right|=\left|-7\right|\)
\(\left|x-5\right|=7\)
\(\Rightarrow x-5=7\) hoặc \(x-5=-7\)
\(x=7+5\) hoặc \(x=-7+5\)
\(x=12\) hoặc \(x=-2\)
b, \(\left|x-3\right|=7-\left(-2\right)\)
\(\left|x-3\right|=7+2\)
\(\left|x-3\right|=9\)
\(\Rightarrow x-3=9\) hoặc \(x-3=-9\)
\(x=9+3\) hoặc \(x=-9+3\)
\(x=12\) hoặc \(x=-6\)
a,x-7=-5
b,128-3.(x+4)=23
d,x-[42+(-28)]=-8
các cậu giúp mik vs ạ!!mình cần đáp án gấp!cảm ơn trước ạ
-12.(x-5)+ 7.(3-x)=5 Giúp mik với
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+1/2=-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) 5/4=7/6
9) x-2/7=1/35
10) x-2/7=-7/10
cả phép tính nữa nha
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
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
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