1）what is the mass of each cube?
2)two more than a number is -12
3)the sum of 1/4 and a number and is four.
4)one eighth of a number is 28.5 more than 76.
请帮忙翻译一下，谢谢。
）what is the mass of each cube? 一个立方体的容积？2)two more than a number is -12 2比什么数大－12？3)the sum of 1/4 and a number and is four. 1/4和几的和是4？4)one eighth of a number is 28.5 more than 76. 什么数的八分之一比28.5大76？...
