1) 7/5:2/3:1.05-4/9=14/9
2. a) 5*x*8,3=20,75
x = 20,75:5:8,3
x = 1/2
b) 5,75+x*1,25=8*1/4
x = (8*1/4-5.75)/1.25
X = 2
1) 7/5:2/3:1.05-4/9=14/9
2. a) 5*x*8,3=20,75
x = 20,75:5:8,3
x = 1/2
b) 5,75+x*1,25=8*1/4
x = (8*1/4-5.75)/1.25
X = 2
Tìm x
a)5× x × 8,3 =20, 75
b)5,75+x × 1,25=8 1/4
a) 5*x*8,3=20,75 b) 5,75+x*1,25=tam va mot phan bon
tìm x
a, 5 * x * 8,3 = 20 ,75
b, 5,75 + x * 1, 25 = 8 và 1/4
Bài 1: Tính
1) 2,75 - 5/6 × 2/5
2) 1,25 - ( 5/6 - 0,75 ) - 3/5
3) 4/9 × 0,75 + 8/5 + 3,125
4) 1,125 - 4/7 - 0,12
5) (1/3 + 0,4) × 3,5 + (1/6 + 0,75) × 6/5
Bài 2: Tìm x, biết
1) 1,25 × x - 0,75 = 1/3
2) x - 0,25 × 2/9 = 1/6 × 0,5
3) 3,375 × 8/9 - x = 5/6
4) 1,75 × 4/5 + x = 4,5
Tìm x
5,75 + x * 1,25 = 8 1/4
Tìm x
5,75 + x * 1,25 = 8 1/4
tinh gia tri bieu thuc:
A) 1000000 - 107492 : 154 x 28 + 1000
B) 8/15 + 4/7 + 14/30 + 12/21 + 5
C) 9/13 : 6/11 - 5/12 : 6/11
Tim x :
1) X x2 + X x 1/5 = 8/5
2) X : 3/8 = 4/3 : 3/6
Tinh nhanh
a)10/11*4 2/5(hon so)
b)2015-4/5*25%
Tim X
8,75*X=20-1,25*X
1. 4 + x = 7 - 2x
2. 5 + x = 8,3 + 4,7 - x
3. x + 12 = 35 + ½x
4. 6 + x = 7⅓ + 2 - x
5. 20x + 4 = 19,2 + 15x
6. x + 5 = 8 2/5 - 4x
7. 3 (x +1) = 13,5
8. 32 - (32 - x) = 32
9. 5x - 12 3/5 = 0
10. x - 10/3 = 0
P/s : Please, help me 😋😋