( 2 . X - 34) :2 = 14
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d,[34-(8^2+14):13]:x=25
[34-(64+14):13]:x=25
[34-78:13]:x=25
28:x=25
x=25.28
x=700
a. - (- 94) + (67 - x) : 2 = (- 34 - 14)
b. 73 - (- 20 + 37) = x - (57 - 39)
c. - (- 34 - 23) = x + 37
\(a,-\left(-94\right)+\left(67-x\right):2=\left(-34-14\right)\)
\(94+67-x:2=-48\)
\(161-x:2=-48\)
\(x:2=209\)
\(x=\frac{209}{2}\)
a.1872
b.3676
2 tui cũng là army yiu bts nhìu
----jung hosoek---
a) 12 x 13 + 12 x 49 + 12 x 14 +14 x 78 = 1873
b) 34 x 34 + 56 x 45 = 3676
a ) x ∈ − 3 4 ; 3 4 b ) x ∈ 2 3 ; − 5 3 ; c ) x ∈ − 3 4 ; 5 4 d ) x ∈ 23 4 ; − 17 4
34x14=476
4450x4865=21649250
35452:3=11817 dư 1
4529532:2=2264766
a: x+3=-12
=>x=-12-3=-15
b: \(x-15=-51\)
=>\(x=-51+15\)
=>\(x=-36\)
d: \(19-\left(2+x\right)=5\)
=>\(2+x=19-5=14\)
=>\(x=14-2=12\)
e: \(\left(9+x\right)-\left(18-31\right)=-15\)
=>\(x+9-\left(-13\right)=-15\)
=>\(x+9+13=-15\)
=>\(x+22=-15\)
=>\(x=-15-22=-37\)
c: \(43-x=20\)
=>\(x=43-20\)
=>\(x=23\)
f: \(-14-\left(34-x\right)=40\)
=>\(-14-34+x=40\)
=>\(x-48=40\)
=>x=40+48=88
c) \(\left(34-2x\right)\left(2x-6\right)=0\)
\(\Rightarrow\left[{}\begin{matrix}34-2x=0\\2x-6-0\end{matrix}\right.\)
\(\Rightarrow\left[{}\begin{matrix}2x=34\\2x=6\end{matrix}\right.\)
\(\Rightarrow\left[{}\begin{matrix}x=17\\x=3\end{matrix}\right.\)
d) \(\left(2019-x\right)\left(3x-12\right)=0\)
\(\Rightarrow\left[{}\begin{matrix}2019-x=0\\3x-12=0\end{matrix}\right.\)
\(\Rightarrow\left[{}\begin{matrix}x=2019\\3x=12\end{matrix}\right.\)
\(\Rightarrow\left[{}\begin{matrix}x=2019\\x=4\end{matrix}\right.\)
e) \(57\left(9x-27\right)=0\)
\(\Rightarrow9x-27=0\)
\(\Rightarrow9\left(x-3\right)=0\)
\(\Rightarrow x-3=0\)
\(\Rightarrow x=3\)
f) \(25+\left(15-x\right)=30\)
\(\Rightarrow25+15-x=30\)
\(\Rightarrow40-x=30\)
\(\Rightarrow x=40-30\)
\(\Rightarrow x=10\)
g) \(43-\left(24-x\right)=20\)
\(\Rightarrow43-24+x=20\)
\(\Rightarrow19+x=20\)
\(\Rightarrow x=20-19\)
\(\Rightarrow x=1\)
h) \(2\left(x-5\right)-17=25\)
\(\Rightarrow2\left(x-5\right)=17+25\)
\(\Rightarrow x-5=21\)
\(\Rightarrow x=21+5\)
\(\Rightarrow x=26\)
i) \(3\left(x+7\right)-15=27\)
\(\Rightarrow3\left(x+7\right)=27+15\)
\(\Rightarrow x+7=14\)
\(\Rightarrow x=14-7\)
\(\Rightarrow x=7\)
j) \(15+4\left(x-2\right)=95\)
\(\Rightarrow4\left(x-2\right)=95-15\)
\(\Rightarrow4\left(x-2\right)=80\)
\(\Rightarrow x-2=20\)
\(\Rightarrow x=20+2\)
\(\Rightarrow x=22\)
k) \(20-\left(x+14\right)=5\)
\(\Rightarrow x+14=20-5\)
\(\Rightarrow x+14=15\)
\(\Rightarrow x=15-14\)
\(\Rightarrow x=1\)
l) \(14+3\left(5-x\right)=27\)
\(\Rightarrow3\left(5-x\right)=27-14\)
\(\Rightarrow3\left(5-x\right)=13\)
\(\Rightarrow5-x=\dfrac{13}{3}\)
\(\Rightarrow x=5-\dfrac{13}{3}\)
\(\Rightarrow x=\dfrac{2}{3}\)
\(\dfrac{2x-34}{2}=14\Rightarrow2x-34=28\Leftrightarrow2x=62\Leftrightarrow x=31\)
x = 31