Các câu hỏi tương tự
a,1/3 .(x-2/5)=3/4 b, 7/3:(x-2/3)=4/5 c,1/3.(x-2/5)=4/5 d, 2/3.(x-1/2)-1/4.(x-2/5)=7/3 e,3/7 .(x-2/3)+1/2=5/4.(x-2) f,1/2.(x-3)+1/3.(x-4)+1/4.(x-5)=1/5 g,[2/3.(x-1/2)-4/5]:(x-1/3)=21/5 h, {x-[1/2.(x-3)+11/5]}:(x-1/2)=3/5 i,x.(x-2/5)-(x+2).x+11/4=4/3
thực hiện phép tính sau
a) 2^4 - 50 : 25 + 13 x 7
b) 3^2 x 5 + 2^3 x 10 - 3^4 : 3
c) 2^5 + 5 x 13 - 3 x 2^3
d) 5^13 : 5^10 - 5^2 x 2^2
e) 4^5 : 4^3 - 3^9 : 3^7 + 5^0
f) 3^2 x 2^4 - 2^3 x 4^2 - 2^3 x 5^0 + 4^2 x2^2
ai nhanh nhất mình tick cho
1) 7. (3x+5)+2.(7x+14)98. 2) 4. (x -5)+3.(x+7)22
3) 5.(4-x) +7.(x-2)24. 4) 3.(x -5)+6.(x+3)12
5) 4-x+5.(x+2)38. 6) 5.( x-3)+2.(x+8)22
7) 5.(x-7)+10.(4+x)20. 8) 4.(x+10)+8.(x-3)24
9) 4.(5-x)+5.(x-2)15. 10) 4.(x-1)+3.(x-2)-1
Đọc tiếp
1) 7. (3x+5)+2.(7x+14)=98. 2) 4. (x -5)+3.(x+7)=22
3) 5.(4-x) +7.(x-2)=24. 4) 3.(x -5)+6.(x+3)=12
5) 4-x+5.(x+2)=38. 6) 5.( x-3)+2.(x+8)=22
7) 5.(x-7)+10.(4+x)=20. 8) 4.(x+10)+8.(x-3)=24
9) 4.(5-x)+5.(x-2)=15. 10) 4.(x-1)+3.(x-2)=-1
1) 5.2²+ (x+3)5² 6) 4³ - (x-2)5²
2) 2³+(x-3²) 5³-4³ 7) 3⁴+ (x+5)5.3²
3) 3.2 + (x+5²)10² 8) 2³.5 - (x+ 3²)10
4) 2⁶+(5+x) 3⁴ 9) 3³ - (x+2⁴)7
5) 5+(x + 3³) 2⁶ 10) 7² - (15+x)5.2²
Đọc tiếp
1) 5.2²+ (x+3)=5² 6) 4³ - (x-2)=5²
2) 2³+(x-3²)= 5³-4³ 7) 3⁴+ (x+5)=5.3²
3) 3.2 + (x+5²)=10² 8) 2³.5 - (x+ 3²)=10
4) 2⁶+(5+x)= 3⁴ 9) 3³ - (x+2⁴)=7
5) 5+(x + 3³)= 2⁶ 10) 7² - (15+x)=5.2²
Bài 1:thực hiện phép tính(hợp lí nếu có thể):1, -5/12 x 2/11 + -5/12 x 9/11 + 5/122, -3/5 : 7/5 - 3/5 : 7/5 + 2 3/53, 1/2+ 3/4 - ( 3/4 - 4/5)4, 2/3 + 1/3 x ( -4/9 + 5/6)5, -3/7 x 5/9 + 4/9 x -3/7 + ( - 2022) ^ 06,0,75 - ( 2 1/3 + 0,75) + 3 ^ 2 x ( -1/9)7, 2 6/7 x [(-7/5 - 3/2 : -5/-4) + ( 3/2)^2]8,2/7 + 5/7 x ( 3/5 - 0,25 ) x ( -2)^2 + 35%9, 1 13/15 x 0,75 - ( 11/20 + 25%): 1 2/510, ( -2,4 + 1/3 ) : 3 1/10 + 75% : 1 1/211.5/3 - 5/7 + 5/9 / 10/3 - 10/7 + 10/9
Đọc tiếp
Bài 1:thực hiện phép tính(hợp lí nếu có thể):
1, -5/12 x 2/11 + -5/12 x 9/11 + 5/12
2, -3/5 : 7/5 - 3/5 : 7/5 + 2 3/5
3, 1/2+ 3/4 - ( 3/4 - 4/5)
4, 2/3 + 1/3 x ( -4/9 + 5/6)
5, -3/7 x 5/9 + 4/9 x -3/7 + ( - 2022) ^ 0
6,0,75 - ( 2 1/3 + 0,75) + 3 ^ 2 x ( -1/9)
7, 2 6/7 x [(-7/5 - 3/2 : -5/-4) + ( 3/2)^2]
8,2/7 + 5/7 x ( 3/5 - 0,25 ) x ( -2)^2 + 35%
9, 1 13/15 x 0,75 - ( 11/20 + 25%): 1 2/5
10, ( -2,4 + 1/3 ) : 3 1/10 + 75% : 1 1/2
11.5/3 - 5/7 + 5/9 / 10/3 - 10/7 + 10/9
tìm x thuộc Z biết:
1) 2(4x-8)-7(3+x)=[-4](3-2)
2) 12(x-4)+6(x-2)-16(x+3)=7[-4]
3) 4(x-5)-7(5-x)+10(5-x)=-3
4) -3[x+5]=15(-3)+7(-3)
5) 4[x-7]-3(-5)=-2[x-7]-10
a ) 3^6 : 3^4 + 2^2x(12-3^3) - 2^0
b) 5^3 x 52 + 5^3 x7 - 5^3
c) 5^3 + ( 4 + 3^4) x2 + (3^3 - 3 ) : 4
d) (2x25x7 - 21x15) : 7
e) 5 x [(92+ 2^5 : 2^2 ) : 5^2 + 2^4 ] - 7^2
f ) ( 5^16 + 4^16) x 3^17 - 3^10 ) x ( 2^4 - 4^2 )
1. 3/2 x 4/5 - x = 2/3
2.x x3 1/2=3 1/3 : 4 1/4
3. 5 2/3:x = 3 2/3- 2 1/2
4. 3/2+1/2:x=3 1/2
5.3/4 x x - 1/5=1/5:1/8
3^3 x 3^4 x 3^7 câu b 4^3 x 4^4 chia 4 mũ 2 câu c 2^8 x 2^2 chia 2 mũ 4 câu d 5^7 5^3 / 5^4
1) x +1/2 =5/3. 2) 3/5 - x =1/3. 3) 3/4 + x =7/2
4) x - 4/3 =7/9. 5)x - 5/6 = 7/3. 6)x- 1/5 =9/10