a, \(3x-4=6+2x\)
\(\Leftrightarrow3x-4-6-2x=0\)
\(\Leftrightarrow x-10=0\Leftrightarrow x=10\)
b, \(\frac{27}{40}x-\frac{3}{\frac{4}{15}}=\frac{2}{\frac{1}{12}}\)
\(\Leftrightarrow\frac{27}{40}x-\frac{45}{4}=24\Leftrightarrow\frac{27}{40}x=\frac{141}{4}\Leftrightarrow x=\frac{470}{9}\)
3x-4=6+2x 2.27/40x-3/5/15=2/1/12
Tìm số nguyên x, biết:
1) -16 + 23 + x = - 16
2) 2x – 35 = 15
3) 3x + 17 = 12
4) (2x – 5) + 17 = 6
5) 10 – 2(4 – 3x) = -4
6) - 12 + 3(-x + 7) = -18
a) x/12=-1/24-1/8
b) 2/3x=1/2x+15/12
c) |3/4-2x|+1/6=9/2
Giúp em với ạ
Tìm x biet:
a,5/2x+x=32/15
b,x-7/2x=-32/15
c,-7/3x-7/4x+11/3=18/5
d,-5/6-3x=2/3
e,2x-5/9=-2/3
f,1/2-2/3x=7/12
g,7-|2x-3|=4
h,(19x+2.5^2):14=(13-8)^2-4^2
i,3/4x-2/3=2/7.1/6+5/7.1/6
k,(x+1/2).(2/3-2x)=0
l,x/2013-1/10-1/15-1/21-........-1/120=5/8
bài 1:
1) 20 - 2(x+4)= 4
2) 30 - [ 4(x-2)+ 15]= 3
3) 14 ⋮(2.x + 3)
4) (3x - 24).7 = 2.73
5) (x + 1)3 = 27
6) (2x - 6).47=49
7) (10 + 2x) : 42011 = 42013
8) [(8x - 12) :4].33 = 36
9) 6⋮(x - 1)
10) (x + 5)⋮(x + 2)
mong mn giúp mình gấp với ạ ^^
1) x(x-5) +3x=0
2) (2x-15) (3-x)=0
3)12+(3-x) tất cả mũ 3=-15
4)2x(x+2/3)-4x=0
5) 2/3x-3/2x=5/12
6)x-5/3 = 2x+1/4
7) x-1/-2= -8/x-1 ( với x khác 1)
8)1-x mũ 2=15/16
9) -2x mũ 3+ 3=13/4
10)(x-1/2) tất cả mũ 2=16/25
TRÌNH BÀY CÁC BƯỚC RÕ RÀNG
ĐÚNG YÊU CẦU SẼ TICK
Tính giá trị biểu thức:
\(\frac{6^2.27^5}{4^5.81^6}\)
\(\frac{3^{18}.32^9}{64^7.27^6}\)
\(\frac{9^{12}.3^5+9^{15}}{\left(2.27\right)^5.3^{14}}\)
\(\frac{5^4+2^2.5^2-125}{2^3.3}\)
Tim X
3) -12 + (2x – 9) + x= 0
4) 11 + (15 - x) = 1
5) 4 - (27 - 3) = x - (13 - 4)
6) 8 - (x - 10) = 23 - (- 4 +12)
7) 105 – 5(10 – 5x) = -20
8) (x -1)(8-2x)(3x+123) = 0
9) (x2 - 25)(x+ 10) = 0
10) x(x2+5) =
