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tốt nhất để tớ chả lời cho
a,4/7.x=1/5+2/3
4/7.x=13/15
13/15:4/7=91/60
b
=-7/8.x=1/3-2/9
-7/8.x=1/9
x=1/9:7/8
x=8/63
c
5/7:x=1/6-4/5
5/7:x=-19/30
x=-116/133
mình đang cần gấp câu trả lời ,bạn nào giải được nhanh k luôn ,hứa đấy
a)-6x=6
x=-1
b)8x=35->x=35/8
c)8|x|=35->|x|=35/2->x=35/2;x=-35/2
mấy ý kia tương tự bạn ạ!
a/ x-2+7=-27
x-2=-34
x=-32
b/ Đề bị điên ak?
c/ -2x=2
x=-1
d/ ko hỉu đề
a, x+9=-7
<=>x=-16
Vậy x=-16
b,x-4=-8
<=>x=-4
Vậy x=-4
c,|x|-2=5
<=>|x|=7
<=>x=\(\pm\)7
Vậy x=\(\pm\)7
d,|x-2|=5
<=>x-2\(\in\){5;-5}
<=>x\(\in\){7;-3}
Vậy x\(\in\){7;-3}
a) x+9=-7
x=-7-9
x=-16
vậy x=-16
b)x-4=8
x=8+4
x=12
vậy x=12
c)|x|-2=5
|x|=5+2
|x|=7
=> x=\(\pm7\)
vậy x=\(\pm\)7
d) |x-2|=5
* x-2=5 * x-2=-5
x=5+2 x=-5+2
x=7 x=-3
vậy x=7 hoặc x=-3
nhiều quá :((
\(a,2\left(x-5\right)-3\left(x+7\right)=14\)
\(2x-10-3x-21=14\)
\(-x-31=14\)
\(-x=45\)
\(x=45\)
\(b,5\left(x-6\right)-2\left(x+3\right)=12\)
\(5x-30-2x-6=12\)
\(3x-36==12\)
\(3x=48\)
\(x=16\)
\(c,3\left(x-4\right)-\left(8-x\right)=12\)
\(3x-12-8+x=0\)
\(4x-20=0\)
\(4x=20\)
\(x=5\)
Cố nốt nha bn !
cảm ơn, bn nha:)))
mà hình như bạn TOP 3 trả lời câu hỏi pải ko nhỉ???
a, => x- 1/4 = 5/12
=> x = 5/12 + 1/4
=> x = 2/3
b, => x/126 = -20/ 63
=> x/126 = -40/126
=> x = -40
TL
a) X. 7/2=7/9
X=7/9:7/2
X=2/9
b) X.:8/5=5/2
X=5/2.8/5
X=4
HT
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