Tìm x: ( x : 4) - 476 = 388
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(x : 4) – 476 = 388
x : 4 = 388 + 476
x : 4 = 864
x = 864 x 4
x = 3456
46+(88-4.x):4=65
(88-4.x):4=65-46
(88-4.x):4=19
88-4.x=19.4
88-4.x=76
4.x=88-76
4.x=12
x=12:4
x=3
912-(476-16.x):7=69
(476-16.x):7=912-69
(476-16.x):7=843
476-16.x=843.7
476-16.x=5901
16.x=476-5901
16.x=(-5425)
x=(-5425):16
x=(-339,0625)
li-ke cho mình nha mình đang cần li-ke
46 + ( 88 - 4x ) : 4 = 65
( 88 - 4x ) : 4= 65- 46
( 88 - 4x ) = 19
( 88 - 4x ) = 19x 4
88-4x = 76
4x = 88- 76
4x = 8
x = 8 : 4
x = 2
476 x 476 + 523 x 476 + 476 = 476 x ( 476 + 523 + 1 ) = 476 x 1000 = 476000
\(=476\times476+523\times476+1\times476\)
\(=\left(476+523+1\right)\times476\)
\(=1000\times476\)
\(=476000\)
a, x-(2+4+6+.........+20)=4960
x-[(2+20):2.10)]=4960
x-110=4960
x=4960+110
x=5070
476 x 24 + 476 + 476 x 75
= 476 x ( 24 + 1 + 75)
= 476 x 100
= 47600
HT và $$$
476 x 24 + 476 + 476 x 75
= 476 x 24 + 476 x 1 + 476 x 75
= 476 x ( 27 + 45 + 1 )
= 476 x 100
= 47600
\(A=\frac{8.4.125.25+96524+476}{10.125.4.25.8}\)
\(A=\frac{1000.100+96524+476}{10.1000.100}\)
\(A=\frac{100000+96524+476}{1000000}\)
\(A=\frac{100000+97000}{1000000}=\frac{197000}{1000000}=\frac{197}{1000}\)
\(A=0,197\)
Các bước giải chi tiết
a) \(\dfrac{392-x}{32}\) + \(\dfrac{390-x}{34}\) + \(\dfrac{388-x}{36}\) = -3
⇔ \(\dfrac{392-x}{32}\)+1+\(\dfrac{390-x}{34}\)+1+\(\dfrac{388-x}{36}\)+1 = 0
⇔\(\dfrac{424-x}{32}\)+\(\dfrac{424-x}{34}\)+\(\dfrac{424-x}{36}\)=0
⇔\(\left(424-x\right)\)\(\left(\dfrac{1}{32}+\dfrac{1}{34}+\dfrac{1}{36}\right)\)=0
⇔\(424-x\) = 0\(\left(\dfrac{1}{32}+\dfrac{1}{34}+\dfrac{1}{36}\ne\forall x\right)\)
⇔\(x=424\)
b) \(\dfrac{x-3}{3}\)- \(x\) = \(5-\dfrac{x+1}{4}\)
⇔\(\dfrac{x-3-3x}{3}\) = 5 + \(\dfrac{-\left(x+1\right)}{4}\)
⇔\(\dfrac{-2x-3}{3}\) = 5 + \(\dfrac{-x-1}{4}\)
⇔\(\dfrac{-2x-3}{3}\) = \(\dfrac{20-x-1}{4}\)
⇔\(\dfrac{-2x-3}{3}\) = \(\dfrac{-x+19}{4}\)
⇔ \(4\left(-2x-3\right)\) = \(3\left(-x+19\right)\)
⇔\(-8x-12\) = \(-3x+57\)
⇔\(-8x\) = \(-3x+69\)
⇔\(-5x=69\)
⇔ \(x=-\dfrac{69}{5}\)
(392-x)/32+(390-x)/34+(388-x)/36=-3
=>392-x)/32 +1 + (390-x)/34 +1 +(388-x)/36 +1=0
=>(424-x)/32+(424-x)/34+(424-x)/36=0
=>424-x=0(vì 1/32+1/34+1/36 khác 0)
=>x=424