Violympic toán 6
Các câu hỏi tương tự
1)6x-8=3x+1
2)12-10x=25-30x
3)3(2x+3)-2(4x-5)=10x+21
4)5(5x-3)-3(2x-4)11-5x
5)4(2-3x)-5(1-2x)=4-6x
6)8(4x-3)-3(2-3x)=13-40x
7)10x-5(1-4x)=5x-11
8)-3(3-4x)-5(4-3x)=12x-50
9)-2(20x-3)-3(4x-5)=9-2(2x-3)
10)-5(2-3x)+3(5-2x)=3x+3(3-5x)
Tìm x,y thuộc Z biết
a.(x-1).(2y-4)=0
b.(3x-2).(y-3)=6
c.(3x-4).(2y-1)=2
d.2xy-3x-2y+8=0
1) 4x-(2x-5)=21
2) 14x+5=8x+10
3) 15+5x=3x+30
4) 2x-5=15-3x
5) 2(3x+5)+3(x+1)=6x+20
6) 4(x-3)+5(x-3)=18
Bài 1 : tìm x thuộc N ,biết
a) 82-7(3x-4)=47
b)97+4(5x-7)=129
c)(7x-13)27-12=15
d)(2x+3)13+23=140
đ)52.x+8x-5x=70
e) 19x-3x-x=60
g) 7(3x+1)-5(3x+1)=74
h)5(3x-1)+7(3x-1)=96
1. 6 X mũ 3 -8 =40
2. 4 X mũ 5 +15=47
3. 2 X mũ 3-4=12
4. 5 X mũ 3-5=0
5. (X -5) mũ 2016 = (X-5) mũ 2018
6. (3X -2) mũ 20= (3X-1) mũ 20
7. (3X -1) mũ 10 = (3X-1) mũ 20
8. (2X -1) mũ 50 = 2X-1
9. (X phần 3 -5) mũ 2000= ( X phần 3-5) mũ 2008
1)8(4x-3)-3(2-3x)=13-40x
2)10x-5(1-4x)=5x-11
3)-3(3-4x)-5(4-3x)=12x-50
Bài 5.Tìm x N, sao cho:a)3636 : (12x –91) 36b)(x : 23 + 45) . 67 8911c)[(6x –39) : 7]. 4 12d)(3x –24). 73 2. 74e)x(x –10) 0f)(x+ 1). (x –2) 0g)(9 –x)3 64h)3x 81i)2 . 3x 10 . 312+ 8 . 312j)(19x + 2.52) : 14 (13 -8)2-42
Đọc tiếp
Bài 5.Tìm x N, sao cho:
a)3636 : (12x –91) = 36
b)(x : 23 + 45) . 67 = 8911
c)[(6x –39) : 7]. 4 = 12
d)(3x –24). 73= 2. 74
e)x(x –10) = 0
f)(x+ 1). (x –2) = 0
g)(9 –x)3= 64
h)3x= 81
i)2 . 3x= 10 . 312+ 8 . 312
j)(19x + 2.52) : 14 = (13 -8)2-42
tim x
a, ( 3-2x ) . ( 1/3 - 1/2 ) ^2 + 4 . (7-5x ) = 9-2x
b, 7 - 3x 1 - 3x
_______ = ______
4 + x x - 5
c) 4( 3x - 4 ) - 2 = 18
d ) ( 3x - 10 ) :10 = 50
f ) x - [ 42 + (-25) = - 8
g) ( 3x - 24 ) . 73 = 2 . 74
h) x + 5 = 20 - ( 12 -7)
k) I x - 5 I = 7 - ( -3)
i) I x - 5 I = I 7 I
2x+1 . 22009 = 22010
10 - 2x = 25 - 3x
-8+6-9x=1-3x
-9x-8+3x+6=1