1) 10 -3 ( x -1 ) = -5
2) 3x + 75 = -15
3) 4x - 15 = -75 - x
4) 12 - ( x - 7 ) = -8
5) x + 75 = 15
6) x - 18 = 3x + 4
7) 2x + 18 = 10
8) 26 - 3x = 5
9) x - 12 = -15
10) 24 - 2 ( x + 5 ) = 38
11) 25 - 5 ( 3 - x ) = 15
12) x + ( -17 ) = -14
13) -5x - 13 = 47
14) 2x + 36 = -18
15) 9 . ( x + 7 ) - 12 = 24
Ai giải dùm mình nhanh nhất, đúng mình tick cho nha
a) |x − 3| − 16 = −4
b) 26 - |x + 9| = −13
c) 5 – ( 10 – x) = 7
d) 11 + ( 15 –x) = 1
e) 8x – 75 = 5x + 21
f) 9x + 25 = - ( 2x – 58)
g) |x + 3| = 4
h) 15 - |2x − 1| = |−8|
Bài 1
a)(x+1)+(x+5)+(x+9)+...+(x+29)=136
Bài 2
a)x-4 và 5/6=2 và 1/6+10/12
b)15/26+x/13=46/52
c)2,8-x=1 và 1/5-3/5
thực hiện phép tính
A= 26/11x 7/4 x 22/21 x 9
B= -10/21 x [ 9/15 + (3/5)2 ]
C= ( 2 - 1/2 - 1/3) x ( 1- 1/4 - 1/7)
1)5x+2(x+1/2)=7
2)8x-3(x+2)=9
3)5(x-2)+3(x-1)=19
4)7(x-3)-2x-5=11
5)6x+3-2(x-5)=30
6)8(x-1/8)-5(x-1/5)=10
7)13x-5-2(x+3)=1
8)4(x-2)-2(x-1)=12
9)6x-13-2-(x×5)=7
10)7(x-5)-3(x+5)=30
Bài 1: Tìm x [GIÚPPPPPPPPPPPPPPPPPPP]
1) 5 – (10 – x) = 7
2) - 32 - (x – 5) = 0
3) -12 + (2x – 9) + x= 0
4) 11 + (15 - x) = 1
5) 4 - (27 - 3) = x - (13 - 4)
6) 8 - (x - 10) = 23 - (- 4 +12)
7) 105 – 5(10 – 5x) = -20
8) (x -1)(8-2x)(3x+123) = 0
9) (x2 - 25)(x+ 10) = 0
10) x(x2+5) = 0
Tính:
a) 2^5 x 13^12 x 7^8 : 27 x 13^10 x 7^9
b) 2^n x 11 x 3 : 6^n x 3
c) 5^5 x 7 x 9^5 : 15^10
d) 7 x 8^10 x 27^9 - 8 x 9^13 x 2^27 : 7 x 6^26 x 2^2 - 2^4 x 8^3 x 27^9
e) 2^2^1^2015
f) 2015^0^2015^0^2015
a, 2(x - 5) + 3(2 - 3x) = 5x + 7
b, 3x - 5(x - 2) + 7 = 4x - 12
c, 1/5×8 + 1/8×11 + 1/11×14 +...+ 1/x(x+3) = 101/1540
d, ( 3/1×2×3 + 3/2×3×4 + 3/3×4×5 +...+ 3/8×9×10 ).x = 22/15
Thanks you so much!
Nhớ ghi đầy đủ các bước làm ra nhá!
Tính:
a) 2^5 x 13^12 x 7^8 : 2^7 x 13^10 x 7^9
b) 2^n x 11 x 3 : 6^n x 3
c) 5^5 x 7 x 9^5 : 15^10
d) 7 x 8^10 x 27^9 - 8 x 9^13 x 2^27 : 7 x 6^26 x 2^2 - 2^4 x 8^3 x 27^9
e) 2^2^1^2015
f) 2015^0^2015^0^2015