Toán Giai phuong trinh (x-1)/196+(x-589)/197+(x+399)/198=0 15/07/2021 By Alaia Giai phuong trinh (x-1)/196+(x-589)/197+(x+399)/198=0
Đáp án : $x=(\dfrac{1}{196}+\dfrac{589}{197}-\dfrac{399}{198}):(\dfrac{1}{196}+\dfrac{1}{197}+\dfrac{1}{198})$ Giải thích các bước giải: $\dfrac{x-1}{196}+\dfrac{x-589}{197}+\dfrac{x+399}{198}=0$ $\to (\dfrac{x}{196}+\dfrac{x}{197}+\dfrac{x}{198})-(\dfrac{1}{196}+\dfrac{589}{197}-\dfrac{399}{198})=0$ $\to x(\dfrac{1}{196}+\dfrac{1}{197}+\dfrac{1}{198})=(\dfrac{1}{196}+\dfrac{589}{197}-\dfrac{399}{198})$ $\to x=(\dfrac{1}{196}+\dfrac{589}{197}-\dfrac{399}{198}):(\dfrac{1}{196}+\dfrac{1}{197}+\dfrac{1}{198})$ Trả lời
Đáp án : $x=(\dfrac{1}{196}+\dfrac{589}{197}-\dfrac{399}{198}):(\dfrac{1}{196}+\dfrac{1}{197}+\dfrac{1}{198})$
Giải thích các bước giải:
$\dfrac{x-1}{196}+\dfrac{x-589}{197}+\dfrac{x+399}{198}=0$
$\to (\dfrac{x}{196}+\dfrac{x}{197}+\dfrac{x}{198})-(\dfrac{1}{196}+\dfrac{589}{197}-\dfrac{399}{198})=0$
$\to x(\dfrac{1}{196}+\dfrac{1}{197}+\dfrac{1}{198})=(\dfrac{1}{196}+\dfrac{589}{197}-\dfrac{399}{198})$
$\to x=(\dfrac{1}{196}+\dfrac{589}{197}-\dfrac{399}{198}):(\dfrac{1}{196}+\dfrac{1}{197}+\dfrac{1}{198})$