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24.x-32.x=145-255:51
16.x-9.x=145-5
16.x-9.x=140
x.(16-9)=140
x.7=140
x=140:7
x=20
580:(x-24)=329-150:2=ko bít
7.(x-4)+35=25+279:9
7.(x-4)+35=25+31
7.(x-4)+35=56
7.(x-4)=56-35
7.(x-4)=21
x-4=21:7
x-4=3
x=3+4
x=7
Ủng
hộ
nha
!
a)24.x -32.x =145-255:51
x . (24 - 32) = 145 - 5
x . (32 - 9) = 140
x . 23 = 140
x = 140 : 23
x = ????
b)580 : ( x -24)=329-150* 21
580 : (x - 24) = 329 - 300
580 : (x - 24) = 29
x - 24 = 580 : 29
x - 24 = 20
x = 20 + 24
x = 44
c) 4x + 4x+1 + 4x+3=1136
4x + 4x .41 + 4x .43 = 1136
4x . ( 1 + 4 + 43) = 1136
4x . 64 = 1136
4x = 1136 : 64
b)580:(x-24)=329-150.2 580:(x-24)=329-300 580:(x-24)=29 (x-24)=580:29 (x-24)=20 x=20+24 x=44
a) 580 : ( x - 24 ) = 329 - 150 . 21
=> 580 : ( x - 24 ) = 329 - 150 . 2
=> 580 : ( x - 24 ) = 329 - 300
=> 580 : ( x - 24 ) = 29
=> x - 24 = 20
=> x = 20 + 24
=> x = 44
Vậy x = 44
mk nha các bạn !!!
=> 580 : ( x - 24 ) = 329 - 150 . 2
=> 580 : ( x - 24 ) = 329 - 300
=> 580 : ( x - 24 ) = 29
=> x - 24 = 20
=> x = 20 + 24
=> x = 44
Vậy x = 44
580:(x-24)=329-150:2
=> 580:(x-24)=329-75
=> 580:(x-24)=254
=>x-24= 580:254
=> x = 290/127 + 24
=> x = 3338/127
+) 24 * x -32 * x = 145-225:51
=> x.(24 -32) = 145-225:51
=> x.7= 145-225:51
=> x.7= 2390/17
=> x= 2390/119
+) 5x + 1 = 625
=> 5x + 1 = 54
=> x+1 = 4
=> x = 3
x(24-32)=145-5
\(\Leftrightarrow\)7x=140
\(\Leftrightarrow\)x=20
5(x+35)-200=288-93
\(\Leftrightarrow\)5(x+35)=288+200-93=395
\(\Leftrightarrow\)x+35=79
\(\Leftrightarrow\)x=44
a, Lời giải
\(x\left(2^4-3^2\right)=145-5\)
\(\Leftrightarrow7x=140\)
\(\Leftrightarrow x=140:7\)
\(\Rightarrow x=20\)
b, Lời giải
\(5\left(x+35\right)-200=288-93\)
\(\Leftrightarrow5\left(x+35\right)=395\)
\(\Leftrightarrow x+35=395:5\)
\(\Leftrightarrow x+35=79\)
\(\Leftrightarrow x=79-35\)
\(\Rightarrow x=44\)
a) (54 + 57) . (89 - 27) . (24 - 42)
= (54 + 57) . (89 - 27) . (16 - 16)
= (54 + 57) . (89 - 27) . 0
= 0
b) (72003 + 72002) : 72001
= 72003 : 72001 + 72002 : 72001
= 72 + 7
= 49 + 7
= 53
c) (169 - 42 ) × ( 169 - 52 ) ×......× ( 169 - 132)
= (169 - 42 ) × ( 169 - 52 ) ×......× ( 169 - 169)
= (169 - 42 ) × ( 169 - 52 ) ×......× 0
= 0
Tìm x biết
7 × ( x - 14 ) + 39 = 25 + 279 ÷ 9
=> 7 × ( x - 14 ) + 39 = 25 + 31
=> 7 × ( x - 14 ) + 39 = 56
=> 7 × (x - 14) = 56 - 39
=> 7 × (x - 14) = 17
=> x - 14 = 17 : 7
=> x - 14 = 17/7
=> x = 17/7 + 14
=> x = 115/7
\((5^4+4^7)\times(8^9-2^7)\times(2^4-4^2)\)
\(=(5^4+4^7)\times(8^9-2^7)\times0\)
\(=0\)
a) 9 - 25 = (7 - x) - (25 + 7)
7 - x - 25 - 7 = 16
-x - 25 = 16
-x = 41
x= -41
a) \(2^4.x-3^2.x=145-\frac{255}{51}\Rightarrow x.\left(2^4-3^2\right)=145-5\)
\(\Rightarrow7.x=140\Rightarrow x=20\)
b) \(\frac{580}{x-24}=329-150.2\Rightarrow\frac{580}{x-24}=329-300\Rightarrow\frac{580}{x-24}=29\Rightarrow x-24=20\)
\(\Rightarrow x=44\)
c) \(7.\left(x-14\right)+35=25+\frac{279}{9}\Rightarrow7.\left(x-14\right)=25+31-35\)
\(\Rightarrow7.\left(x-14\right)=21\Rightarrow x-14=3\Rightarrow x=17\)