3(x-1)=2(x+2)
=>3x-3=2x+4
=>3x-2x=4+3
=>x=7
3(x-1)=2(x+2)
=>3x-3=2x+4
=>3x-2x=4+3
=>x=7
\(\left(x-2\right)^3+\frac{8}{27}=0\)
\(4\frac{1}{3}:\frac{x}{4}=6:0,3\)
(0,25-30%x).\(\frac{1}{3}-\frac{1}{4}=5\frac{1}{6}\)
\(\frac{x-2}{\frac{-2}{9}}=\frac{-2}{x-2}\)
1. Tính nhanh
a) 8154-(674+8154)+(-98+674)
b) -25-21+25-72+49.25
c) \(\frac{1}{3.4}+\frac{1}{4.5}+\frac{1}{5.6}+\frac{1}{6.7}+\frac{1}{7.8}+\frac{1}{8.9}+\frac{1}{9.10}\)
2. Bỏ dấu ngoặc, thu gọn biểu thức
a) A=(-a+b-c)-(-a-b-c)
b) B=(2a+b)-3b)+(a-3c)-(3a+2c)
Mong các bạn làm nhanh mk đag cần gấp
Tim X :
a)x:1/3+2/3[1/5-1] =4
b)1/2 [x-3/5]=-1/3[7/6-3/2]
c)1/3-3/4=3/5 -x
d)4/7x-2/3=1/3+x
Tìm x biết :
a) -2×(x-1/3)-5× (x+1/3)=1/2×x
b) -(1/2×x-3/4)-(-x+1)=-3/2
Cảm ơn nhiều nha!
1, 7x+6(3-x)=27-20+73
2,6x-5(x-7)=(27-514)-486-73)
3,2x-6=3(x-5)+25+27-15-17
4, 4(x-5)-3(x+5)=2579-2578
5,/x-5/-7(x+4)=5-7x
6,3/x+4/-2(x-1)=7-2x
7, 2/x-6/+7x-2=/x-6/+7x
8,/x+8/+5(x-2)=5x-10:2
9, /x+2/-6(x-4)=20-6x
2*(x-1)+3*(x-2)=x-4
Tìm x
/x/ + / x+1 / + / x+4 / +....+ | x + 20| -11x = 0
| x - 7 | + | y + 11 | = 2
|6-x| + |y+2| = 1
| x+1| + / x+2 / + / x+3 / +....+ | x + 10| =11x
Giúp tớ với ạ 😭
A. 5x=6×(x-1)
B.1×(3x)=(x+1)×2
C.3×(2x+1)=5×(x+2)
D.5×(7-x)=-4×(8x-2)
Cho x1 + x2 +x3+..........+x2016 + x2017 = 0 và x1 + x2 = x3 + x4 = x5 + x6 = .......... = x2015 +x2016 = x2016 + x2017 = 1
Tìm x2016