( x : 142 ) + 457 = 625
=> ( x : 142 ) = 625 - 457 = 168
=> x = 168/142 = 84/71
x : 1/2 + x : 1/7 + x : 1/3 = 864
=> x : ( 1/2 + 1/7 + 1/3 ) = 864
=> x : 41/42 = 864
=> x = 864 * 41/42 = 5904/7
87 : x + 93 : x - 66 : x =38
65 × x + 95784 = 101569
( x : 142 ) + 457 = 625
x : \(\frac{1}{2}\)+ x : \(\frac{1}{7}\)+ x : \(\frac{1}{3}\)= 864
3/Tìm x
x : 142 + 457 = 625
x - 16,7 + 8,6 = 16,9
( x - 1\(\frac{3}{4}\)) x : 2\(\frac{1}{4}\)= \(\frac{5}{3}\)
tìm x
2/9 + 7/9 : x = 1/18
x x 7/5 - 2/5 = 2/15
4/7 x ( x - 1/2 ) = 3/14
2/5 x x + 3/10 x x - x : 5 = 7/10
x × 8 = 25.6
x : 7,5 = 27,44
( x : 142 ) + 457 = 625
Giúp tớ nhé!
( 158 + 154 ) × 32 - 284 × 35
( 873 - 586 ) × 25 + ( 315 + 289 )
Bài 2 :
65 + x + 95784 = 101569
87 : x + 93 : x - 66 : x = 38
x : 2 + x × 4 = 7
( x : 42 ) + 457 = 625
Bài 3 :
7/2 + 5/14 + 1/7 + 3/14
1995 × 1997 - 1 / 1996 × 1995 + 1994
469 × 281 + 469 × 718
( 158 + 154 ) × 32 - 284 × 35
( 873 - 586 ) × 25 + ( 315 + 289 )
Bài 3 :
65 + x + 95784 = 101569
87 : x + 93 : x - 66 : x = 38
x : 2 + x × 4 = 7
( x : 42 ) + 457 = 625
Bài 4 : 7/2 + 5/14 + 1/7 + 3/14
19995 × 1997 - 1 / 1996 × 1995 + 1994
469 × 281 + 469 × 719
Bài 2 :
( 158 + 154 ) × 32 - 284 × 35
( 873 - 586 ) × 25 + ( 315 + 289 )
Bài 3 :
65 + x + 95784 = 101569
87 : x + 93 : x - 66 : x = 38
x : 2 + x × 4 = 7
( x : 42 ) + 457 = 625
Bài 4 :
7/2 + 5/14 + 1/7 + 3/14
19995 × 1997 - 1 / 1996 × 1995 + 1994
469 × 281 + 469 × 719
( 2746 - x ) - 258 = 1360
25 × x - x = 14040 : 45
x : 1/2 + x : 1/7 + x : 1/3 = 864
( 5915 + 3550 : 25 ) - 76 × 25
7 × 2/3 - 2/5 : 1/2 - 2/3
1\(\frac{2}{3}\): \(\frac{2}{3}\)- \(\frac{3}{4}\)× \(\frac{2}{3}\)+ 5\(\frac{3}{7}\)
1\(\frac{1}{3}\)+ 1\(\frac{1}{4}\): 1 \(\frac{1}{2}\)+ 2\(\frac{3}{4}\)× 2\(\frac{2}{3}\)
65 + x + 95784 = 101569
87 : x + 93 : x - 66 : x = 38
x : 2 + x × 4 = 7
( x : 42 ) + 457 = 625
Bài 4:
\(\frac{2}{7}\)+ \(\frac{5}{14}\)+ \(\frac{1}{7}\)+ \(\frac{3}{14}\)
\(\frac{1995×1997-1}{1996×1995+1994}\)
469 × 281 + 469 × 719