\(7x-x=5^{21}:5^{19}+3\times2^2-7^0 \)
Tìm x
7x -x= 5^21:5^19 =3. 2^2-7 ^0
Bài 1:Tìm x
a) 5x+x=39-3^11:3^9
b) 7x-x=5^21:5^19+3.2^2-7^0
c) 7x-2x =6^17:6^15+44:11
tìm x
a) 6x + x = 511 : 519 + 31
b) 7x - x = 521 : 519 + 3 . 22 - 70
sorry gửi nhầm .
\(a,6x+x=5^{11}:5^{19}+3^1\)
\(\Leftrightarrow7x=3,00000256\)
\(\Leftrightarrow x=0,428571794\) ( hình như đề sai )
\(b,7x-x=5^{21}:5^{19}+3.2^2-7^0\)
\(\Leftrightarrow6x=36\)
\(\Leftrightarrow x=6\)
2^x+1*2^2014=2^2015 tim x
7x-x=5^21/5^19+3*2^2-7 tìm x
7x-x=5^21:5^19+3.2^2-7^0
7x-x=521:519+3.22-70
=>x.(7-1)=53+3.4-1
=>6x=125+12-1
=>6x=136
=>x=68/3
7x - x = 521 : 519 + 3. 22 - 70
(7-1)x=52 + 3. 4 - 1
6x = 25 + 12 - 1
6x = 36
x = 6
\(7x-x=5^{21}:5^{19}+3.2^2-7^0\)
\(\Rightarrow7x-x=5^2+3.4-1\)
\(\Rightarrow7x-x=25+12-1\)
\(\Rightarrow7x-x=37-1\)
\(\Rightarrow7x-x=36\)
\(6x=36\)
\(\Rightarrow x=6\)
7x -x =521:519+3 . 22- 70
Tôj sẽ cho bn kết quả gần đúng( ͡° ͜ʖ ͡°) (nhớ đấy gần đúng thui nhé)
7x -x =\(5^{21}:5^{19}+3.2^2-7^0\)
7x -x =\(5^2\) + 3.4 -0
7x -x =25 +12 -0
7x -x =37
6x =37
x=6.16
Thấy bàj nó saj saj.Tạj đề bàj hay tạj tuj lm nhỉ??? ( ͠° ͟ʖ ͡°)
7x-x=5^21 : 5^19+3.2^2-7^0
6x=5^2 +3.4-1
6x=25+12-1
6x=37-1=36. x=6
7x= 521: 519 + 3 x 22 -70 + x
\(7x=5^{21}:5^{19}+3\times2^2-7^0+x\)
\(7x=5^2+3\times4-1+x\)
\(7x=25+12-1+x\)
\(7x-x=36\)
\(6x=36\)
\(x=6\)
k mk nha
thank you
Bai 1: Tính nhanh
a) 5x+x = 39-3^11:3^9
b) 7x-x = 5^21:5^19+3*2^2-7^0
c) 0:x = 0
Bai 1: Tính nhanh
a) 5x+x = 39-3^11:3^9
=>5x+x=39-3^2
=>5x+x=39-9
=>5x+x=30
=>6x=30
=>x=5
b) 7x-x = 5^21:5^19+3*2^2-7^0
=>7x-x=5^2+3x4-1
=>7x-x=25+12-1
=>7x-x=37-1
=>7x-x=36
=>6x=36
=>x=6
c) 0:x = 0
=>x=0:0
=>x=0
tìm x, biết:
a, 5x + x = 39-311:39
b, 7x - x = 521:519+3.22-70
c, 7x - 2x = 617:615+44:11
a) \(5x+x=39-3^{11}:3^9\)
\(6x=39-3^2\)
\(x=30:6\)
\(x=5\)
vậy \(x=5\)
b) \(7x-x=5^{21}:5^{19}+3.2^2-7^0\)
\(6x=5^2+12-1\)
\(6x=36\)
\(x=6\)
vậy \(x=6\)
câu c tương tự nha
a ) 5 x + x = 3 9 − 3^11:3^9
6 x = 39 − 3^2
x = 30:6
x = 5
vậy x = 5
b ) 7 x − x = 5^21:51^9 + 3.2^2 − 7^0
6 x = 5^2 + 1 2 − 1
6 x = 36
x = 6
v ậ y x = 6
câu C làm tương tự nha bn @!!!!!!