ADMICRO
Tìm x biết \(3x - \left( {\frac{2}{3}x + \frac{1}{2}} \right) = 3,5\)
Chính xác
Xem lời giải
Hãy suy nghĩ và trả lời câu hỏi trước khi xem đáp án
ZUNIA12
Lời giải:
Báo sai\(\begin{array}{l} 3x - \left( {\frac{2}{3}x + \frac{1}{2}} \right) = 3,5\\ 3x - \frac{2}{3}x - \frac{1}{2} = \frac{7}{2}\\ \left( {3 - \frac{2}{3}} \right)x - \frac{1}{2} = \frac{7}{2}\\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\frac{7}{3}x = \frac{7}{2} + \frac{1}{2}\\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\frac{7}{3}x = \frac{8}{2}\\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x = \frac{8}{2}:\frac{7}{3}\\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x = \frac{8}{2}.\frac{3}{7}\\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x = \frac{{12}}{7} \end{array}\)
ZUNIA9
AANETWORK