Question

[Nguyễn Trần Trình Huy]

Tìm x biết \(\left(1+2\frac{1}{12}-10,75\right)x-7=\left(\frac{2}{5}+\frac{8}{5}+0,225\right):0,1\)

Answer 1

[Le Thi Khanh Huyen]

\(\left(1+2\frac{1}{12}-10,75\right)x-7=\left(\frac{2}{5}+\frac{8}{5}+0,225\right):0,1\)

\(=\left(\frac{37}{12}-\frac{129}{12}\right)x-7=\left(2+\frac{9}{40}\right).10\)

\(=-\frac{23}{3}x=\frac{28}{4}+\frac{89}{4}=\frac{201}{4}\)

\(x=\frac{201}{4}:\left(-\frac{23}{3}\right)=\frac{201}{4}.\left(-\frac{3}{23}\right)=-\frac{603}{92}\)

Answer 2

[Minh Triều]

Trần Thùy Dung đúng ruj