+) \(24+\left(x-6\right)=135\)
\(\Rightarrow x-6=135-24=111\)
\(\Rightarrow x=111+6=117\)
+) \(2019-2\cdot\left(3x-2\right)=19\)
\(\Rightarrow2\cdot\left(3x-2\right)=2019-19=2000\)
\(\Rightarrow3x-2=2000:2=1000\)
\(\Rightarrow3x=1000+2=1002\)
\(\Rightarrow x=1002:3\)
\(\Rightarrow x=334\)
+) \(3^x+3^{x+1}=324\)
\(\Rightarrow3^x+3^x\cdot3=324\)
\(\Rightarrow3^x\cdot\left(1+3\right)=324\)
\(\Rightarrow3^x\cdot4=324\) \(\Rightarrow3^x=324:4=81\)
\(\Rightarrow3^x=3^4\) \(\Rightarrow x=4\)
Tim so nguyen x biet:
a,x-(-24)=3
b,(x+5)-(x-9)=x+3
c,c(x+2)=0
d,(x-1)^2=0
e,x^2-3x=0
f,-13-(6-|x+1|)=24
g,26-|x+9|=-13
i,(3x-6).3=3^4
ai nhanh mình tick nha, mình cần gấp lắm
1.tìm số nguyên x , biết :
a, 5x -34= 162 : 2
b, 14 - /x - 3/ = 8
c, ( 72 - x ) + \(6^{15}\):\(6^{14}\)= 21
d, \(3^{x+1}\)+\(3^{x+2}\)= 324
e, 93 - ( \(x^2\)- 15 ) = \(3^2\). 3
g, 86 - ( 3x + 24 ) = 32
2,tim x :
a,3 + 2x-1=24-[4^2-(2^2-1)]
b,(3x-2^4)*7^5=2 *7^6
1) 1 và 1/2 + x = 3/2 - 7
2) 1/4 + 1/3 : 3x = -5
3) 4/5 . x = 8/35
4) 2/3x - 1/4 = 7/1
5) 3/5x + 1/2 = 1/7
6) 1 - (5 và 3/8 + x - 7 và 5/24 ) : ( -16 . 2/3 ) = 0
1) 7. (3x+5)+2.(7x+14)=98. 2) 4. (x -5)+3.(x+7)=22
3) 5.(4-x) +7.(x-2)=24. 4) 3.(x -5)+6.(x+3)=12
5) 4-x+5.(x+2)=38. 6) 5.( x-3)+2.(x+8)=22
7) 5.(x-7)+10.(4+x)=20. 8) 4.(x+10)+8.(x-3)=24
9) 4.(5-x)+5.(x-2)=15. 10) 4.(x-1)+3.(x-2)=-1
Tìm x :
a, 2640+(( 900 -3x )/45)*24=3000
b, 1404:(118-(4x+6))=27
c, 16/8x-2019/2021
d, 5xmũ 2 -3x=0
e, 3(x-1)+4(x-1)mũ 2 =0
f,2(x-2) mũ 2 =(x-2)
g, (x-2020) mũ 4 = ( x-2020) mũ 2
Tìm x
2.(x-1)+3.(3x-2)=x-4
3.(4-x)-2.(x-1)=x+20
4.(2x+7)-3.(3x-2)=24
3.(x-2)+2x=10
Tím x biết:
a, 461+(x-45)=387
b, 11-(-53+x)=97
c, -(x+84)+213=-16
d, 2. (x-5)-3(x-4)=-6-15.(-3)
e, 15-(4-x)=6
j, -30+(25-x)=-1
g,(2x-5)+17=6
h, 10-2(4-3x)=-4
i,-12+3(-x+7)=-18
k,24:(3x-2)=-3
l,-45:5.(-3-2x)=3
m, 3x+27=9
Tìm số tự nhiên x biết :
a)(x2-1).(2x-6)=0
b)2x+3x-x-24=16
c)(x2+1).(x-5).(x-1)=0