\(\sqrt{121}-1,2x=3,5x+9\)
\(\Leftrightarrow\sqrt{11^2}-9=3,5x+1,2x\)
\(\Leftrightarrow11-9=4,7x\)
\(\Leftrightarrow4,7x=2\)
\(\Leftrightarrow x=\frac{20}{47}\)
\(\sqrt{121}-1,2x=3,5x+9\)
\(\Leftrightarrow\sqrt{11^2}-9=3,5x+1,2x\)
\(\Leftrightarrow11-9=4,7x\)
\(\Leftrightarrow4,7x=2\)
\(\Leftrightarrow x=\frac{20}{47}\)
Tìm x biết :
a )/3,5-x/=1,3
b) 2,6-/3,5-x/ =0
c)2/5-/1/2-x/=6
d) /x-1,2/+/3,5-x/=0
tìm x thuộc Q
a. | 2,8 - x | + 1,2 = | -4,6|
b. | x-3,5| + | 5,5 - y|
giải nhanh giúp mình
GTNN của: A=|x+1,2|-3,5
tìm x
\(9\times5^x=6,5^6+3,5^6\)
\(2^{2x+1}+4^{x+3}=264\)
Tìm x, biết:
a) |x|= 3,5
b) |1 - x| + 0,73 = 3
c) \(\dfrac{-5}{8}\) + x = \(\dfrac{4}{9}\)
Tìm x
√121 - 1,2x = 3,5x + 9
tìm x, biết:
a) (2x+3)^2=9/121
Tìm x, biết: a) 121-(115+x)= 3x-(25-9-5x)-8
b)2x+2.3x+1.5x = 10800
c) (3|x-1/2) . (8/15-1/5)+2/3-1
d) x+1/2022 + x+2/2021= x+3/2020 + x+4/2019
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