Các câu hỏi tương tự
Tìm thương A:B, biết:
A= 9/1 + 8/2 + 7/3 + 6/4 + 5/5 + 4/6 + 3/7 + 2/8 + 1/9
B=1/2 + 1/3 + 1/4 + 1/5 + 1/6 + 1/7 + 1/8 + 1/9 + 1/10
7\48-(1\2×2+1\4×3+1\6×4+1\8×5+1\10×6+1\12×7+1\14×8):X=0
Tìm x?
B2: Tìm x
a) | x | = 3,5
b) |1-x |+ 0,73 = 3
c) -5/8 + x = 4/9
d) x.(1/5 + 1/4) - (1/7 + 1/8) =0
e) | x | + -2,7
f) |x + 3/4 | -5 = -2
Tìm x:a) 1dfrac{3}{4} . x + 1dfrac{1}{2} dfrac{-4}{5}b) x ( dfrac{1}{5} + dfrac{1}{4} ) - ( dfrac{1}{7} + dfrac{1}{8} ) 0c) | x | 3,5d) | x | -2,7e) | 1 - x | + 0,73 3f) 52 . 73 . 11x + 52 . 72 .11 0g) (3 . 5 + 5 . 7)x + ( 3 . 5 + 5 . 7) + (3 . 5 + 5 . 7) 0h) 52 . 72 . 112x - 52 . 72 . 114 0l) | x + dfrac{3}{4} | - 5 -2
Đọc tiếp
Tìm x:
a) \(1\dfrac{3}{4}\) . x + \(1\dfrac{1}{2}\) = = \(\dfrac{-4}{5}\)
b) x ( \(\dfrac{1}{5}\) + \(\dfrac{1}{4}\) ) - ( \(\dfrac{1}{7}\) + \(\dfrac{1}{8}\) ) = 0
c) \(|\) x \(|\) = 3,5
d) \(|\) x \(|\) = -2,7
e) \(|\) 1 - x \(|\) + 0,73 = 3
f) 52 . 73 . 11x + 52 . 72 .11 = 0
g) (3 . 5 + 5 . 7)x + ( 3 . 5 + 5 . 7) + (3 . 5 + 5 . 7) = 0
h) 52 . 72 . 112x - 52 . 72 . 114 = 0
l) \(|\) x + \(\dfrac{3}{4}\) \(|\) - 5 = -2
Tìm x ∈ Qbiết:
a, 5 4 + x + 3 7 = 20 1 .
b, 4 7 . x − 5 1 = 8 21 .
1. Tìm x biết:
a) | 3/2.x + 1/2 | = | 4x - 1 |
b) | 5/4.x - 7/2 | - | 5/8.x + 3/5 | = 10
c) | 7/5.x + 2/3 | = | 4/5.x - 1/4 |
Tìm x:
a) \(-\dfrac{4}{7}\) - x = \(\dfrac{3}{5}\) - 2x
b) (\(\dfrac{3}{8}\) - \(\dfrac{1}{5}\)) + (\(\dfrac{5}{8}\) - x) = \(\dfrac{1}{5}\)
tìm x : x.(1/5+1/4) - ( 1/7+1/8 ) = 0
b 5^2.7^3.11^2+5^2.7^2.11 = 0
Tìm số nguyên a
a)4/5<5/a<10/7 b)2/5<a-1/10<8/15(a-1 là tử, 10 là mẫu)
c)12/7<4/a<8/3. d)5<a^2-15<16