Chủ đề:
Văn bản ngữ văn 9Câu hỏi:
viet doan van khoang 200 chu trinh bay suy nghi cua em ve y kien sau "o tren doi moi truyen deu khong co gi kho khan neu uoc mo cua minh du lon
=14+23
= 37
300 + 400 + 700
= (300 + 700) + 400
= 1000 + 400
= 1400
a)2(4x-7)=3(x+1)+18
b)(2x-1)2-4x(x-3)=-11
c)(2x-5)2-(x+2)2=0
d)(x-6)(x+1)=2(x+1)
e)\(\frac{x-3}{2}=2-\frac{1-2x}{5}\)
g)\(\frac{3x+2}{2}+\frac{5-2x}{3}=\frac{11}{6}\)
h)\(\frac{x-2}{x+2}-\frac{3}{x-2}=\frac{9x-66}{x^2-4}\)
i)\(\frac{x+2}{x+3}+\frac{2x-1}{x-3}=\frac{13x-9}{x^2-9}\)
k)\(\frac{x+2}{x-2}+\frac{5}{x}=\frac{3x+1}{x^2-2x}\)