\(\frac{4}{7}+x=2\)
\(x=2-\frac{4}{7}\)
\(x=\frac{10}{7}\)
4/7 + x = 2
x = 2 - 4/7
x = 10/7
nhấn đúng cho mk nha
4/7+x=2
=>4/7+x=14/7
=>x=14/7-4/7
=>x=10/7
\(\frac{4}{7}+x=2\)
\(x=2-\frac{4}{7}\)
\(x=\frac{10}{7}\)
4/7 + x = 2
x = 2 - 4/7
x = 10/7
nhấn đúng cho mk nha
4/7+x=2
=>4/7+x=14/7
=>x=14/7-4/7
=>x=10/7
Tìm x biết:
a) ( x - 1/2) x 5/3 = 7/4 - 1/2
b) ( x - 4/3) x 7/4 = 5 - 7/6
Tìm x : |x|-38/7*|x|-3/4=2|x|+(-8/7)
x*13/4+(-7/6)*x-5/3=5/12
93/17:x+(-4/17):x+22/7:52/3=4/11
Bài 3 Tìm x biết
a) \(\left(x-4\right)^2=\left(x-4\right)^4\)
b) \(\left(\dfrac{4}{5}\right)^{2x+7}=\dfrac{625}{256}\)
c) \(\dfrac{7^{x+2}+7^{x+1}+7^x}{57}=\dfrac{5^{2x}+5^{2x+1}+5^{2x+2}}{131}\)
Tìm x , biết
d) \(\left(3x-2^4\right).7^3=2.7^4\)
e) x - [ 42 + ( -28 ) ] = -8
g) x - 7 = -5
h) 15 - 5( x + 4 ) = -12 - 3
i) ( 7 - x ) - ( 25 + 7 ) = -25
k) l x + 2 l = 0
l) l x - 3 l = 7 - ( -2 )
m) lx - 5l = l-7l
tìm x biết :
a) \(\left(x+\frac{1}{2}\right).\left(\frac{2}{3}-2x\right)=0\)
b) \(\left(x.6\frac{2}{7}+\frac{3}{7}\right).2\frac{1}{5}-\frac{3}{7}=-2\)
c) \(x.3\frac{1}{4}+\left(-\frac{7}{6}\right).x-1\frac{2}{3}=\frac{5}{12}\)
d) \(5\frac{8}{17}:x+\left(-\frac{4}{17}\right):x+3\frac{1}{7}:17\frac{1}{3}=\frac{4}{11}\)
e) \(\frac{17}{2}-\left|2x-\frac{3}{4}\right|=-\frac{7}{4}\)
tìm x
a)-5.(-x+7)-3.(-x-5)=-4.(12-x)+48
b) (-x-7)-5.(-x-3)=12.(3-x)
c)-2.(15-3x)-4.(7x+8)=-5-9.(-2x+1)
d) (-3x-7) - 4.(-2x-11)=7.(4x+10)+9
1.tính
a; 41 x 36 + 59 x 90 + 41 x 84 + 59 x 30
b; 4 x 51 x 7 + 2 x 86 x 7 + 12 x 2 x7
c; 1727 + [ 6993 : 111 + ( 148 - 95 ) x 4 - 2 ]
d; 600 : { 450 : [ 450 - ( 4 x 125 - 8 x 25 ) ] }
e; ( 28 x 9 -190 ) x 25 -2790 : 45
g; ( 527 + 291 - 518) : 5
2. tìm x
[ 3 ( x + 2 ) : 7 ] . 4 = 120
giúp mình với
tìm x
a, 100-7(x-5)=31+3 mũ 3
b, 12(x-1) : 3 = 4 mũ 3 + 2 mũ 3
c, 24+5x=7 mũ 5 : 7 mũ 3
5x-206 = 2 mũ 4 . 4
125=x mũ 3
64=x mũ 2
giúp mik nha!!!!!!!!!!!!!
tìm x:
a)\(\left(x+\dfrac{1}{2}\right).\left(\dfrac{2}{3}-2x\right)=0\)
b) \(\left(x.6\dfrac{2}{7}+\dfrac{3}{7}\right).2\dfrac{1}{5}-\dfrac{3}{7}=-2\)
c) \(x.3\dfrac{1}{4}+\left(\dfrac{-7}{6}\right).x-1\dfrac{2}{3}=\dfrac{5}{12}\)
d) \(5\dfrac{8}{17}:x+\left(-\dfrac{4}{17}\right):x+3\dfrac{1}{7}:17\dfrac{1}{3}=\dfrac{4}{11}\)
Tìm các số nguyên x, y:
a) \(\left|x-2\right|.y+\left|x-2\right|-17=0\)
b) \(3\left|x-5\right|-4=\left|1-3^2\right|\)
c) 8B - 7 = (-7)x biết B = 7 - 72 + 73 - 74 + ... +7119 - 7120 (\(x\in N\))
d) 2(x+3) = 3(1-x) - 2
e) \(70⋮\left(x-3\right);98\left(x-3\right)\) và x > 8