Tìm x:
x – 125 = 344
Tìm x:
a) x – 125 = 344
b) x + 125 = 266
x = 344 + 125
x = 469
b) x + 125 = 266
x = 266 - 125
x = 141
7^x + 7^x+3 = 344
mk làm đen :
7^x * 1 + 7^x * 7^3 = 344
7^x ( 1 + 7^3 ) = 344
7 ^x * ( 1+343 ) = 344
7^x * 344 = 344
7 ^x = 344 : 344
7 ^x = 1
k bt làm nx
- giúp mk vs ạ
Tìm x biết : x-2/327 + x-3/326 + x-4/325 + x-5/324 + x-344/5 =1
Tìm x biết
7x + 72x+3 = 344
7^x + 7^2x+3=344
7^x + 7^2x . 7^3 =344
7^x + 7^2 . 7^x . 7^3 =344
7^x . (7^2+1) . 7^3 = 344
7^x . 50 . 343 =344
làm tiếp ........
tìm x biết
a)1/6+x=5/12
b3/4+1/4x=-1/2
c)7 mũ 2x +7 mũ 2x +3=344
\(\dfrac{1}{6}+x=\dfrac{5}{12}\)
\(=>x=\dfrac{5}{12}-\dfrac{2}{12}=\dfrac{1}{4}\)
\(\dfrac{3}{4}+\dfrac{1}{4}x=-\dfrac{1}{2}\)
\(=>\dfrac{1}{4}x=-\dfrac{5}{4}\)
\(=>x=-\dfrac{5}{4}.4=-5\)
\(7^{2x}+7^{2x+3}=344\)
\(< =>49^x+49^x.343=344\)
\(=>x=?\)
125-(30+x+125)=(x-237)-(8-237) tìm x
125-30-x-125=x-237-8+237
-30-x=x-8
=> -30=2x-8
=> x=-11
Tìm x: A.55+7x=125 B.55-(19-x)=125
Tìm x A.55+7x=125 B.55-(19-x)=125
a: Ta có: 7x+55=125
\(\Leftrightarrow7x=70\)
hay x=10
b: Ta có: \(55-\left(19-x\right)=125\)
\(\Leftrightarrow55-19+x=125\)
hay x=89
a) 125*136+365
b)5x+x+x=49 tìm x
c)125y+125z=125 tìm y+z
a) 16635
b)7x=49 x=7
c)125(y+z)=125
y+z=1