\(\left(\dfrac{1}{2}\right)\times\left(-\dfrac{1}{2}\right)^6=\left(\dfrac{1}{2}\right)^7=\dfrac{1}{128}\)
\(\left(\dfrac{2}{3}\right)^3\times\left(-\dfrac{2}{3}\right)^4=\left(\dfrac{2}{3}\right)^7=\dfrac{128}{2187}\)
\(\left(\dfrac{4}{5}\right)^5\times\left(-\dfrac{4}{5}\right)^4=\left(\dfrac{4}{5}\right)^9\)
TÌM X, BIẾT:
a) 3 . ( 1/2 - x ) + 1/3 = 7/6 - x
b) 4 . ( 1/2 - x ) - 5 . ( x - 3/10 ) = 7/4
c) -3/2 . ( 4/5 - 2/3 ) + x = 4 . ( x - 1/2 )
d) 2 . ( 3/2 - x ) - 1/3 = 7x - 1/4
e) 1/5 . ( -3/5 -10 ) + 5x = x - 2/3
f) -3/2 . ( 5 - 1/6 ) + 4 . ( x - 1/2 ) = 1
~ PLEASE HELP ME ~
X-3/8=1/6-1/5
-7/10(x+1/3) =4/5
X-4/3=5/6
( -1/2)-3/5=4/6
6/5+(x-2/3)=4/7
\(b) 5^{x+4} - 3 . 5^{x+3} = 2. 5^{11} \)
\(c) 2 . 3^{x+2} + 4 . 3^{x+1} = 10 . 3 ^{6}\)
\(d) 6 . 8 ^ {x-1} + 8 ^ {x+1} = 6 . 8^ {19} + 8 ^ {21}\)
tìm x :
a/ (1/3 + 1/6 ) . 2x + 2x+1 = 212 + 210
b/ (1/2 - 1/6 ) . 3x+4 - 4 . 3x = 316 - 4 . 313
c/ 3/2 . 4x + 5/3 . 4x+2 = 3/2 . 48 + 5/3 . 410
1a) 2x+1/2=-5/3
B) -3x-3/4=6/5
C) 3/2x-2/5=1/2x-1/4
D) 1/2(x+2)-4(x-1/4)=1/2x
E) 4(1/2-x)-5(x-3/10)=7/4
Nhớ giải cuj thể nha
Tìm X:
a, 3/7- (2/5 + X + 3/2) = 5/14 - /4/35 - (-11)/70 /
b,3/4(x-8) = 5/7.(4-1/2)
c,3/2 - 4(1/4 - x) = 2/3 - 7x
d,4.(1/2-x) - 5.(x-3/10) = 7/4
Tìm giá trị của x biết:
a) x - 3/5 = 1 - 4/5 + 1/6
b) ( - 10/4 ) + 1/4 = 3/4
c) -3/2 + ( x - 1/2 ) = 1/2
d) x - 2/7 = 7/2 1
đ) ( 1/6 + 1/10 - 1/15 ) + x = 0
1. a) 3 . ( 1/2 - x ) + 1/3 = 7/6 - x
b) 4 . ( 1/2 - x) - 5 . ( x - 3/10) = 7/4
c) -3/2 ( 4/5 - 2/3 ) + x = 4 . ( x + 1/2 )
d) 2 . ( 3/2 - x ) - 1/3 = 7x - 1/4
AI LÀM ĐÚNG HẾT THÌ MIK HACK TICK CHO NHÉ!~
Bài 1
a, Tính P=1+1/2(1+2)+1/3(1+2+3)+1/4(1+2+3+4)+....+1/2012(1+2+3+...+2012)
b,Tìm x thỏa mãn 4^5+4^5+4^5+4^5/3^5+3^5+3^5.6^5+6^5+6^5+6^5+6^5+6^5/2^5+2^5=2^x
1/7=8/-x
3x/9=2/6
4/2/5:(-33/10)+x=-1/5/6
(x-2/1/4):(-5/6)=3
-8:(4/1/5x+3/10)=4/4/9
(5,5x-44):(-3/2)=30
(13/10x-15).(-5/14)=3
1/3.(x+5/2)=-2
chu y dau( //)la so tap phan con dau( /) la phan so
