Question

[hanam1]

1.(X-1/2)+(x-1/4)+(x+1/8)=1/4

2.112,5 xX-37,25:1/x+X x 99/4=34,5

Answer 1

[Nguyễn Lê Phước Thịnh]

1: \(\left(x-\dfrac{1}{2}\right)+\left(x-\dfrac{1}{4}\right)+\left(x+\dfrac{1}{8}\right)=\dfrac{1}{4}\)

=>\(3x-\dfrac{3}{4}+\dfrac{1}{8}=\dfrac{1}{4}\)

=>\(3x=\dfrac{1}{4}+\dfrac{3}{4}-\dfrac{1}{8}=1-\dfrac{1}{8}=\dfrac{7}{8}\)

=>\(x=\dfrac{7}{24}\)

2: \(112,5\times X-37,25:\dfrac{1}{X}+X\times99,4=34,5\)

=>\(112,5\times X-37,25\times X+99,4\times X=34,5\)

=>\(X\times\left(112,5-37,25+99,4\right)=34,5\)

=>\(X\times174,65=34,5\)

=>\(X=\dfrac{34.5}{174.65}=\dfrac{690}{3493}\)

Answer 2

[hanam1]

ai cứu mình vs