a/ BSCNN (12, 25, 30) = 22.52.3 = 4.25.3 = 300
=> X=300
b/ (3x-24).73=2.73 <=> 3x-16=2.74:73
<=> 3x-16=2.7 => 3x-16=14 => 3x=30 => x=10
c/ /x-5/=16+2.(-3) <=> /x-5/=16-6 <=> /x-5/=10 => x-5=\(\pm\)10
=> x=15 và x=-5
Tìm x biết:
\(a,\left(x-\dfrac{3}{4}\right)+50\%=\dfrac{1}{6}\)
\(b,\dfrac{1}{2}x-\dfrac{5}{6}x=\dfrac{7}{2}\)
\(c,\left(4-x\right)\left(3x+5\right)=0\)
\(d,\dfrac{x}{16}=\dfrac{50}{32}\)
\(e,\left(2x-3\right)+\dfrac{3}{2}=-\dfrac{1}{4}\)
1. Tìm x biết :
a . x chia hết cho cả 12;25;30 va 0<hoac =x <hoac =500
b.(3x-24) . 73=2.74
c. |x-5| =16+2.(-3)
a/\(^{3+2^{x-1}=24-\left[4^2-\left(2^2-1\right)\right]}\)
b/(x+1)+(x+2)+(x+3)+....+(x+100)=205550
c/Ix-5I=18+2x(-8)
d/\(\left(3x-2^4\right).7^5=2.7^6.\frac{1}{2009^0}\)
Nhờ các bạn giúp mk nhé
\(2\left(X-5\right)-3\left(X-4\right)=\left(-6\right)+15\left(-3\right)\)
\(\left|X-1\right|+\left|X-5\right|=4\)
3X chia hết cho X-1 Tìm x
2X+7 chia hết cho X-3
tìm x:
a) \(5^{x-2}-3^2=2^4-\left(2^8.2^4-2^{10}.2^2\right)\)
b) 697 : [ ( 15x + 364 ) : x ] = 17
c)\(\left(3x-2^4\right).7^3=2.7^4\)
1.Tìm số nguyên x biết
x chia hết 12,10 và -200<x<200
2. Tìm x thuộc Z biết
a) \(2.\left(x-3\right)-3.\left(x-5\right)=4.\left(3-x\right)-18\)
b) \(-21-11\)chia hết cho \(3x+2\)
tìm x:
\(^{5^{x-2}-3^2=2^4-\left(2^8.2^4-2^{10}.2^2\right)}\)
\(697:\left[\left(15x+364\right):x\right]=17\)
\(\left(3x-2^4\right).7^3=2.7^4\)
Tìm x, biết:
\(a,\dfrac{1}{3}:\left(2x-1\right)=\dfrac{-1}{6}\)
\(b,\left(3x+2\right)\left(\dfrac{-2}{5}x-7\right)=0\)
\(c,\dfrac{x}{8}=\dfrac{9}{4}\)
\(d,\dfrac{x-3}{2}=\dfrac{18}{x-3}\)
\(e,4,5x-6,2x=6,12\)
\(h,11,4-\left(x-3,4\right)=-16,2\)
Tìm x thuộc Z biết
a) \(2.\left(x-3\right)-3.\left(x-5\right)=4.\left(3-x\right)-18\)
b) \(-2x-11\)chia hết cho \(3x+2\)
