\(\dfrac{5}{8}x-\dfrac{1}{3}x-\dfrac{1}{6}x=15\)
\(\Rightarrow x\left(\dfrac{5}{8}-\dfrac{1}{3}-\dfrac{1}{6}\right)=15\)
\(\Rightarrow x\left(\dfrac{15}{24}-\dfrac{8}{24}-\dfrac{4}{24}\right)=15\)
\(\Rightarrow x.\dfrac{3}{24}=15\)
\(\Rightarrow x.\dfrac{1}{8}=15\Rightarrow x=15:\dfrac{1}{8}=15.\dfrac{8}{1}=120\)
tìm x
5x -x =4088 + (5 ^7 + 5^9 ) . (6 ^8 + 6^10 ) . (2^4-4^2)
3 ^2 . ( 15 - 2x )- 5 ^2 = 5 . 2 ^2
152 - ( 2x-1)^3 = 3^0.3^1.3^2
AI NHANH MÌNH TICK NHA
Tìm x:
a) x+ 30%x= -1.3
b) x - 25%x= 1/2
c) làm 2 cách: x-1,5= 2/3x +6
d) -3/4x+12= 2x - 5
e) -6/5x+8=x-7/2
giai giup mik nha:
Bài 1 Tìm x
1.3/4:x/6=75/100
2.(1/4*x-1/8)*3/4-1/4
3.71+65*4=x+140/x +260
4.7878:(12*x-91)=78
5.2/7+3/7<x<14/5+7/5
6.(x+1)+(x+4)+(x+7)+(x+10)+....+(x+34)=330
7.96-3,75:x=94,5
8.(7*13+8*13):(29/3-x)=39
Lưu ý:câu3 có nghĩa là x+140 trên x rồi +260
giai giup mik nha:
Bài 1 Tìm x
1.3/4:x/6=75/100
2.(1/4*x-1/8)*3/4-1/4
3.71+65*4=x+140/x +260
4.7878:(12*x-91)=78
5.2/7+3/7<x<14/5+7/5
6.(x+1)+(x+4)+(x+7)+(x+10)+....+(x+34)=330
7.96-3,75:x=94,5
8.(7*13+8*13):(29/3-x)=39
Lưu ý:câu3 có nghĩa là x+140 trên x rồi +260
1. Tìm số tự nhiên x biết 1) 3^x . 3=243 2) 7.2^x=56 3) x^3=8 4)x^20=x 5) 2^x-15=17 6) (2x+1)^3=9.81 7) x^6:x^3=115 8) ( 2x-15)^5=(2x-15)^3 9) 3^x+2-5.3^x=36 10) 7.4^x-1+4^x+1=23 Giúp tớ bài này với
tìm y biết : y : 6 x 7.2 +1.3 x y + y : 2 + 15 = 19.95
Bài toán 3 : Tìm x, biết.
a. 2(x – 5) – 3(x + 7) = 14 b. 5(x – 6) – 2(x + 3) = 12
c. 3(x – 4) – (8 – x) = 12 d. -7(3x – 5) + 2(7x – 14) = 28
e. 5(3 – 2x) + 5(x – 4) = 6 – 4x f. -5(2 – x) + 4(x – 3) = 10x – 15
g. 2(4x – 8) – 7(3 + x) = |-4|(3 – 2) h. 8(x – |-7|) – 6(x – 2) = |-8|.6 – 50
k. -7(5 – x) – 2(x – 10) = 15 l. 4(x – 1) – 3(x – 2) = -|-5|
m. -4(x + 1) + 89x – 3) = 24 n. 5(x – 30 – 2(x + 6) = 9
o. -3(x – 5) + 6(x + 2) = 9 p. 7(x – 9) – 5(6 – x) = – 6 + 11x
q. 10(x – 7) – 8(x + 5) = 6.(-5) + 24
6) 8(x – |-7|) – 6(x – 2) = |-8|.6 – 50
7) -7(5 – x) – 2(x – 10) = 15
8) 4(x – 1) – 3(x – 2) = -|-5|
tìm x :
a) 5/16-x+5/11=-5/6
b) -1/3-x-4/5=4/15
c) x-1/5=3/4.(-5/7)
d) x:(-1/6)=13/-19+8/15
