Cho \(\frac{a}{c}\)= \(\frac{b}{d}\)
Chứng minh :a) \(\frac{a+2020b}{a-2020b}\) = \(\frac{e+2020d}{e-2020d}\)
b) \(\frac{2020\left(a+c\right)}{2020a}\)= \(\frac{b+d}{b}\)
c) 2a+3c(b+d)=(a+c)(2b+3d)
Giải giúp em nha
Cho \(\frac{a}{c}\)= \(\frac{b}{d}\)
Chứng minh :a) \(\frac{a+2020b}{a-2020b}\) = \(\frac{e+2020d}{e-2020d}\)
b) \(\frac{2020\left(a+c\right)}{2020a}\)= \(\frac{b+d}{b}\)
c) 2a+3c(b+d)=(a+c)(2b+3d)
Giải giúp em nha
Cho số thực a,b,c,d khác 0 thoả mãn
\(a+b+c+d -2020d/d = b+c+d- 2020a/a = c+d+a - 2020b/b = d+a+b - 2020c/c\)
Tính giá trị biểu thức F= a+b/c+d + b+c/d+a + c+d/a+b + d+a/b+c
Cho tỉ lệ thức \(\frac{a}{b}=\frac{c}{d}\). Chứng minh rằng \(\frac{2019a^2+2020b^2}{2019a^2-2020b^2}=\frac{2019c^2+2020d^2}{2019c^2-2020d^2}\)
cho \(\dfrac{a}{b}=\dfrac{c}{d}\)Chứng minh rằng
\(\dfrac{2018a-2019b}{2019c+2020d}\)=\(\dfrac{2018c-2018c}{2019a+2020b}\)
CMR: câu a) 2018a-2019b / 2019c+2020d = 2018c - 2019d / 2019a+2020b
câu b) a^2 + c^2 / b^2 + d^2 = a/bd
\(Cho\frac{a}{b}=\frac{c}{d}.CMR:\frac{2019a^2+2020b^2}{2019a^2-2020b^2}=\frac{2019c^2+2020d^2}{2019c^2-2019d^2}\)
#Ttql
#Duongg
Cho a/b=c/d Với b/d khác +-3/2 . Chứng minh rằng:
a)2a+3c/2b+3d=2a-3c/2b-3d.
b)a^2+c^2/b^2+d^2=ac/bd
Cho a/b=c/d chứng minh rằng 2a+c/2b+d=2a-3c/2b-3d