\(15-3\left(x-2\right)=21\)
\(\Leftrightarrow15-3x+6=21\)
\(\Leftrightarrow21-3x=21\)
\(\Leftrightarrow-3x=0\)
\(\Leftrightarrow x=0\)
Vậy ...
\(25+4\left(3-x\right)=1\)
\(\Leftrightarrow25+12-4x=1\)
\(\Leftrightarrow37-4x=1\)
\(\Leftrightarrow4x=36\)
\(\Leftrightarrow x=9\)
Vậy ...
15-3(x-2)=21
3(x-2)=15-21
3(x-2)=-6
x-2=-6:3
x-2=-2
x=-2+2
x=0
vậy x=0
25+4(3-x)=1
4(3-x)=1-25
4(3-x)=-24
3-x=-24:6
3-x=-4
x=3-(-4)
x=7
vậy x=7
bài toán tim x
a,(2.x-5)-3=2
b,(3.x+1)+(x+1)=4
c,-12.(x-5)+7(3-x)=15
Tim số nguyên x
A:1-(4.x+13)=3-x
B:(-12)^2.x=56-(-10).13.x
C:3.x-(-15)-(-10)=15+x
Bài 1 tim x
a) (3.x-15 mũ 7) = 0
b) 4^2-x-6 +1
c)(3 - x ) ^ 10 x . ( 3-x ) ^20 = 1 ( x+ 3)
d) ( x - 6 mũ 3 ) = ( x - 61 mũ 2)
tim x :
a) ( x - 15 ) : 3 = 19
b) ( 5x - 45 ) x 15 = 450
c) 187 - 3( x + 4 ) = 34
d) 9x - 45 = 3^7 : 3^5
e ) ( 12x - 4^3 ) x 8^3 = 4 x 8^4
f ) x^2 = 4 , x^3 = 27
g ) ( x + 1 )^2 = 4
h ) ( 2x - 1 )^2 = 25
k ) ( 2x - 1 )^5 = 243
giup mik nhanh nhat co the nha
tim x, biet:
a,(3x-15)^7=0
b,4^2x-6=1
c,(3-x)^20:(3-x)^10=1(x khac 3)
d,(x-6)^3=(x-6)^2
Tim x biet
A, 2x +23x = 625
B, (2^2+4^2) x + 2^4 ×5 ×x =100
C, (3x + 1)^2 = 6^2 + 8^2
D, (7x -11)^3 = 7^2 × 5^2 - 15^2
E, (2x- 1)^4 = 3× (3^2+4^3+2)
tim x
a. x15 = x
b. [ 2.x +1]3 =125
c . [x-5]4 =[x-4]6
Tim x, biet:
1) -5.(2-x)+4.(x-3)=10.x-15
2) 2.(7x-14)-7.(3x-5)=28
3) 17+x=7+6.x
4) 4.!x-2!=8
5) 4.x-5.(-3+x)=7
mik dag gap lam tra loi nhanh va chi tiet giup mik
tim x
a, 5x-9=2x+15
b, 2 .(x-3)-4(x+4)=3.(-7) + 5
