Giúp mình với :
5674 : x -4674 : x =50
Tìm x :
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100 - 50:(x-4)=75
50:(x-4)= 100 - 75
50:(x-4)=25
x-4= 50:25
x-4=2
x=2+4
x=6
\(\left(x+1005\right)+a=525+\left(1005+a\right)\)
\(x+1005+a=525+1005+a\)
\(x+a-a=525+1005-1005\)
\(x=525\)
vay \(x=525\)
\(\left(b+4672\right)+x=b+4674\)
\(b+4672+x-b=4674\)
\(x=4674-4672\)
\(x=2\)
vay \(x=2\)
a ) ( x + 1005 ) + a = 525 + ( 1005 + a )
( x + 1005 ) + a = ( 525 + 1005 ) + a
( x + 1005 ) + a = 1530 + a
x + a + a = 1530 - 1005
x,a = 525
b ) ( b + 4672 ) + x = b + 4674
b + 4672 + x = b + 4674
b + b + x = 4674 - 4672
b,x = 2
a) \(\left(2,4-3x\right).0,5=0,9\)
\(2,4-3x=0,9:0,5\)
\(2,4-3x=1,8\)
\(3x=2,4-1,8\)
\(3x=0,6\)
\(x=0,6:3\)
\(x=0,2\)
b) \(\left(8,8x-50\right):0,4=51\)
\(8,8x-50=51.0,4\)
\(8,8x-50=20,4\)
\(8,8x=20,4+50\)
\(8,8x=70,4\)
\(x=70,4:8,8\)
\(x=8\)
c) \(\left(0,472-x\right):2=1,634\)
\(0,472-x=1,634.2\)
\(0,472-x=3,268\)
\(x=0,472-3,268\)
\(x=-2,796\)
d) \(1,6-\left(x-0,2\right)=6,5\)
\(x-0,2=1,6-6,5\)
\(x-0,2=-4,9\)
\(x=-4,9+0,2\)
\(x=-4.7\)
\(a.2,4-3x=1,8\)
\(3x=0,6\)
\(x=0,2\)
\(b.8,8x-50=20,4\)
\(8,8x=70,4\)
\(x=8\)
\(c.0,472-x=3,268\)
\(x=-2,796\)
\(d.x-0,2=-4,9\)
\(x=-4,7\)
5674 : x -4674 : x =50
(5674-4674):x=50
1000:x=50
x=1000:50
x=20