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\((\frac{4}{3}-\frac{1}{4}-\frac{5}{12})\)+2x=\(\frac{8}{5}:\frac{3}{5}\)
=\(\frac{2}{3}\)+2x=\(\frac{8}{3}\)
2x=\(\frac{8}{3}-\frac{2}{3}\)
2x=2
x=2:2
x=1
Vậy x=1
\(\left(\frac{4}{3}-\frac{1}{4}-\frac{5}{12}\right)+2x=\frac{8}{5}:\frac{3}{5}\)
\(\left(\frac{16}{12}-\frac{3}{12}-\frac{5}{12}\right)+2x=\frac{8}{5}.\frac{5}{3}\)
\(\frac{2}{3}+2x=\frac{8}{3}\)
\(2x=\frac{8}{3}-\frac{2}{3}\)
\(2x=2\)
\(x=2:2\)
\(x=1\)
Vậy \(x=1\)
Chúc bạn học thật tốt !!!
(x + 3)(y - 1) = 4
=> x + 3 và y - 1 thuộc Ư(4)
ta có bảng :
| x+3 | 1 | -1 | 2 | -2 | 4 | -4 |
| y-1 | 4 | -4 | 2 | -2 | 1 | -1 |
| x | -2 | -4 | -1 | -5 | 1 | -7 |
| y | 5 | -3 | 3 | -1 | 2 | 0 |
(x + 3) . (y - 1) = 4
Ta có bảng sau:
| x+3 | 1 | 4 | -1 | -4 | 2 | -2 | ||
| y-1 | 4 | 1 | -4 | -1 | 2 | -2 | ||
| x | -2 | 1 | -4 | -7 | -1 | -5 | ||
| y | 5 | 2 | -3 | 0 | 3 | -1 |
Vậy....
(xl mình kẻ thừa 2 cột)
mik gửi nhầm link đây nhé https://olm.vn/hoi-dap/detail/1459935110952.html?auto=1
\(23\left(x-1\right)+19=65\)
\(23\left(x-1\right)=65-19\)
\(23\left(x-1\right)=46\)
\(x-1=46:23\)
\(x-1=2\)
\(x=2+1\)
\(x=3\)
\(5x+3x=88\)
\(x\left(5+3\right)=88\)
\(x.8=88\)
\(x=88:8\)
\(x=11\)
\(x^3=64\)
\(x^3=4^3\)
\(\Rightarrow x=4\)
\(\left(5x-4\right):7-2=6\)
\(\left(5x-4\right):7=6+2\)
\(\left(5x-4\right):7=8\)
\(5x-4=8.7\)
\(5x-4=56\)
\(5x=56+4\)
\(5x=60\)
\(x=60:5\)
\(x=12\)
\(x^{50}=x\)
\(\Rightarrow x=1\)
\(4.2^x-3=125\)
\(4.2^x=125+3\)
\(4.2^x=128\)
\(2^x=128:4\)
\(2^x=32\)
\(2^x=2^5\)
\(\Rightarrow x=5\)
k mk nha
Suy ra 24×25=-4(7x-3)
Suy ra 600=-28x+12
Suy ra -28x=600-12=588
Suy ra x=588/-28=-21
(\(\dfrac{2}{3}\) - \(\dfrac{11}{7}\) + \(\dfrac{13}{5}\)) - (5 - \(\dfrac{4}{7}\) + \(\dfrac{6}{5}\)) - (\(\dfrac{11}{3}\) - \(\dfrac{3}{5}\))
= \(\dfrac{2}{3}\) - \(\dfrac{11}{7}\) + \(\dfrac{13}{5}\) - 5 + \(\dfrac{4}{7}\) - \(\dfrac{6}{5}\) - \(\dfrac{11}{3}\) + \(\dfrac{3}{5}\)
= (\(\dfrac{2}{3}\) - \(\dfrac{11}{3}\)) - (\(\dfrac{11}{7}\) - \(\dfrac{4}{7}\)) + (\(\dfrac{13}{5}\) - \(\dfrac{6}{5}\)+ \(\dfrac{3}{5}\))
= \(\dfrac{-9}{3}\) - \(\dfrac{7}{7}\) + (\(\dfrac{7}{5}\) + \(\dfrac{3}{5}\)) - 5
= - 3 - 1 + 2 - 5
= - (3 + 1) - ( 5 - 2)
= - 4 - 3
= - 7
a) 14-(7-x+3)=5-{4-(5- |3| ) }
14-(10-x) = 5-{4-(5-3) }
x +14-10=5-(4-2)
x+4 = 5-2
x+4 =3
x =3-4
x =-1 Vậy x= -1
-7 + [ - (-3) + |6| - (544 + |-6 |) ] = 5 - ( 7 - x + 4)
-7+{ 3+6-(544+6) } =5-(11-x)
-7+(9-600) =x+5-11
-7+-591 =x+(-6)
-598 = x+ (-6)
x =-598 - (-6)
x = -592
Vậy x= -592
tick mình nha
\(\frac{1}{4}+\frac{1}{3}:3x=-5\)
\(\frac{1}{3}:3x=(-5)-\frac{1}{4}\)
\(\frac{1}{3}:3x=\frac{-21}{4}\)
\(\frac{1}{9}\cdot x=\frac{-21}{4}\)
\(x=\frac{-21}{4}:\frac{1}{9}\)
x=\(\frac{-189}{4}\)
Vậy x=\(\frac{-189}{4}\)
\(\frac{1}{4}+\frac{1}{3}:3x=-5\Rightarrow\frac{1}{3}:3x=\left(-5\right)-\frac{1}{4}=\frac{-21}{4}\)
\(3x=\frac{1}{3}:\frac{-21}{4}=\frac{1}{3}.\frac{4}{21}=\frac{4}{63}\)
\(\Rightarrow x=\frac{4}{63}:3=\frac{4}{63}.\frac{1}{3}=\frac{4}{189}\)