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\(x\times326,63+245,37\times x=429\)
\(x\times\left(326,63+245,37\right)=429\)
\(x\times572=429\)
\(x=429:572\)
\(x=0,75\)
dễ cũng ko dễ cũng ko khó
\(x\times326,63+245,37\times x=429\)
\(x\times\left(326,63+245,37\right)=429\)
\(x\times572=429\)
\(x=429:572\)
\(x=0,75\)
![](https://rs.olm.vn/images/avt/0.png?1311)
\(36x+12,67=489,67\)
\(36x=489,67-12,67\)
\(36x=477\)
\(x=\frac{477}{36}\)
\(626,63x+245,37=429\)
\(\Rightarrow626,63x=183,63\)
\(x=\frac{183,63}{626,63}\)
\(x=...\)(dùng máy tính mà bấm nha bạn)
![](https://rs.olm.vn/images/avt/0.png?1311)
X x 326,63 + 245,37 x X = 429
X x (326,63 + 245,37) = 429
X x 571 = 429
X = 429 : 571
X \(\frac{429}{571}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
36 x X + 12,67 = 489,67
=> 36 x X = 477
=> X = 13,25
X x 326,63 + 245,37 x X = 429
=> X x ( 326,63 + 245,37 ) = 429
=> X x 573 = 429
=> X = 0,75
36 x X + 12,67 =489,67
36 x X =489,67- 12,67
36 x X =477
X =477 : 36
X =13,25
X x 326,63 + 245,37 x X =429
X x (326,63 + 245,37) =429
X x 572 =429
X =429 : 572
X =0,75
![](https://rs.olm.vn/images/avt/0.png?1311)
y x 326,63 + 245,37 x y = 429
y x ( 326,63 + 245,37 ) = 429
y x 572 = 429
y = 429 : 572
y = 0,75
\(y\cdot326,63+245.37\cdot y=429\)
\(y\cdot\left(326,63+245,37\right)=429\)
\(y\cdot572=429\)
\(y=429:572=\frac{3}{4}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
a ) 36 * x + 12 ,67 = 489,67
36 * x = 489,67 - 12,67
36 * x = 477
x = 477 : 36 = 13,25
b ) x * 326,63 = 245,37
x = 245,37 : 326,63 = 0,7512169733....
c ) 29,5 * ( x + 10 ,25 ) = 376,125
x + 10 ,25 = 376,125 : 29,5
x + 10 ,25 = 12,75
x = 12,75 - 10,25 = 2,5
d ) 748 : (x - 31,72) = 13,6
x - 31,72 = 748 : 13,6
x - 31,72 = 55
x = 55 + 31,72 = 86,72
a, 36 * x + 12,67 = 489,67
36 * x = 489,67 - 12,67 = 477
x = 477 : 36 = 13,25
b, x * 326,63 = 245,37
x = 245,37 : 326,63 = 0,75
c, 29,5 * (x + 10,25) = 376,125
x + 10,25 = 376,125 : 29,5 = 12,75
x = 12,75 - 10,25 = 2,5
d, 748 : ( x - 31,72 ) = 13 ,6
( x - 31,72 ) = 748 : 13,6 = 55
x = 55 + 31,72 = 86,72
![](https://rs.olm.vn/images/avt/0.png?1311)
147 x 91 x 147 x 909
= ( 147 x 91 ) x ( 147 x 909 )
= 13377 x 133623
= 1787474871
2016 x 419 - 2016 x 329
= ( 419 - 329 ) x 2016
= 100 x 2016
= 201600
147 x 91 x 147 x 909
= 13377 x 133623
= 1787474871
2016 x 429 - 2016 x 329
= 2016 x ( 429 - 329 )
= 2016 x 100
= 201600
![](https://rs.olm.vn/images/avt/0.png?1311)
A) 4,29 x 1230 - 429 x 2,3
= 429 x 12,3 - 429 x 2,3
= 429 x ( 12,3 - 2,3 )
= 429 x 10
= 4290
B) 30 - 15 + 36 - 18 + 42 - 21 + ... + 96 - 48 + 102 - 51
= ( 15 + 15 ) - 15 + ( 18 + 18 ) - 18 + ... + ( 48 + 48 ) - 48 + ( 51 + 51 ) - 51
= 15 + 18 + 21 + ... + 48 + 51
= [( 51 - 15 ) : 3 + 1] x ( 15 + 51 ) : 2
= [36 : 3 + 1] x 66 : 2
= [12 + 1] x 33
= 13 x 33
= 429
\(x times 326,63+245,67 \times x=429\)
\(x \times (326,63+245,67)=429\)
\(x \times 572,3=429\)
`x=429:572,3`
\(x=\dfrac{429}{572,3}=\dfrac{4290}{5723}\)