Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(\left[3^4-\left(8^2+14\right):13\right]\cdot x=5^3+10^2\)
\(\Rightarrow\left[81-\left(64+14\right):13\right]\cdot x=125+100\)
\(\Rightarrow\left(81-78:13\right)\cdot x=225\)
\(\Rightarrow\left(81-6\right)\cdot x=225\)
\(\Rightarrow75\cdot x=225\)
\(\Rightarrow x=225:75\)
\(\Rightarrow x=3\)
a) \(-x-14+32=-26\)
\(-x=-26-32+14\)
\(-x=-44\)
\(x=44\)
b) \(-152-\left(3x+1\right)=\left(-2\right)\left(-27\right)\)
\(-152-3x-1=54\)
\(-3x=96\)
\(x=-32\)
c) \(x+x+x+82=-2-x\)
\(3x+82=2+x\)
\(2x=-80\)
\(x=-40\)
d) \(\left(-1\right)\left(-3\right)\left(-6\right)x=36\)
\(-18x=36\)
\(x=-2\)
1)
\(-x-14+32=-26\)
\(\Rightarrow-x+18=-26\)
\(\Rightarrow-x=-26-18\)
\(\Rightarrow-x=-44\)
\(\Rightarrow x=44\)
Vậy \(x=44\)
2)
\(-152-\left(3x+1\right)=\left(-2\right)\left(-27\right)\)
\(\Rightarrow-152-3x-1=54\)
\(\Rightarrow-153-3x=54\)
\(\Rightarrow-3x=54+163\)
\(\Rightarrow-3x=207\)
\(\Rightarrow x=207:\left(-3\right)\)
\(\Rightarrow x=-69\)
Vậy \(x=-69\)
3)
\(x+x+x+82=-2-x\)
\(\Rightarrow3x+82=-2-x\)
\(\Rightarrow3x+x=-2-82\)
\(\Rightarrow4x=-84\)
\(\Rightarrow x=-21\)
Vậy \(x=-21\)
4)
\(\left(-1\right)\left(-3\right)\left(-6\right).x=36\)
\(\Rightarrow-18x=36\)
\(\Rightarrow x=-2\)
Vậy \(x=-2\)
=-(23.3.4.7)=-1932
=2.8.14.3=672
=-(34+26+91+99)=-250
=82+(-120)=-(120-82)=-38
=20.(-4)+31.(-20)=20.(-4-31)=20.(-35)=-700
=125+/-25/=125+25=150
=26+34=60
=(-275) +115=-160
=(-34)+34=0
=-18.31-28.(-24)=-555+672=114
a)
\(26+|x|=34\)
\(\Rightarrow|x|=34-26\)
\(\Rightarrow|x|=8\)
\(\Rightarrow\orbr{\begin{cases}x=8\\x=-8\end{cases}}\)
Vậy x = 8 hoặc x = -8
2x-2016=2018
2x =2018+2016
2x =4034
x =4034:2
x =2017
3x +1=82
3x =82-1
3x =81
3x =34
x =4
20x-11=20x+2x-12
20x-11=x(20+2)-12
20x-11=22x-12
20x =22x-12+11
20x =22x-1
22x-2x=22x-1
2x =1
x =1:2
x =0,5
(x+1)+(x+2)+(x+3)+(x+4)=26
x+x+x+x+1+2+3+4 =26
4x+10 =26
4x =26-10
4x =16
x =16:4
x =4
a) 4(x+1)-(3x+1)=14
<=>4x+4-3x-1=14
<=>4x-3x = 14-4
<=>x=10
b) -12(x-5) +7.(3x)=5
<=> -12x +60 + 21+7x=5
<=> -12x+7x=5-60-21
<=> -5x=-76
<=> x=76/5
c) 17x + 34 -4x+28-9x=82
<=> 17x-9x-4x=82-34-28
<=> 4x=20
<=> x=5
Ta có:|x+26| + | x+8| + | x+82|= 4x
x+26 +x+8+x=82 =4x
(x+x+x)+(26+8+82) =4x
3x + 116 =4x
3x - 4x = -116
-1x =-116
x =116
Vậy x=116
\(2575+37-2576-29\)
\(=2612-2576-29\)
\(=36-29=7\)'
\(35+35+36+37-14-15-16-17\)
\(=70+\left(36-16\right)+\left(37-17\right)-14-15\)
\(=70+20+20-14-15\)
\(=90+6-15\)
\(=96-15=81\)
\(13\cdot\left(-12\right)+87.\left(-12\right)\)
\(=\left(-12\right)\cdot\left(13+87\right)\)
\(=\left(-12\right)\cdot100=-1200\)
\(26\cdot17+17\cdot74\)
\(=\left(26+74\right)\cdot17\)
\(=100\cdot17=1700\)
\(25\cdot\left(-18\right)+25\left(-82\right)\)
\(=25\cdot\left[\left(-18\right)+\left(-82\right)\right]\)
\(=25\cdot\left(-100\right)=\left(-2500\right)\)
\(25+37-48-25-37\)
\(=\left(25-25\right)+\left(37-37\right)-48\)
\(=0+0-48\)
\(=0-48=\left(-48\right)\)
\(\left(-16\right)+24+16-34\)
\(=\left[\left(-16\right)+16\right]+\left(24-34\right)\)
\(=0+\left(-10\right)=\left(-10\right)\)
[34-(82+14):12]:x=26
[34-96:12]:x=26
[34-8]:x=26
26:x=26
x=26:26
x=1