x-2/3x+x+2/7x=30
(1-2/3+1+2/7)x=30
(34/21)x=30
x=30÷34/21
x=315/17
猜你喜欢
- 1We will meet ____ ____ ____ ____ (在······右边)the playground.
- 2圆的弦长公式有哪些
- 3请问1×10-3mol/L 的亚甲基蓝(MB)溶液的配制?1×10-3mol/L的FeSO4溶液怎么配置?
- 4not very
- 5请计算图示桁架中指定杆件1和2的内力,请写出解题步骤.
- 6海伦公式的怎么证明
- 7tom has _____the work for two days.he planto finish it tomorrow
- 8cartoon school foot 谁的读音与众不同
- 9It is __from my place to the Workers'Club
- 10用塑料尺在木梳上的齿上划过,木梳能发出声音.改变塑料尺划动的速度,实际上改变了什么