Question

英语数学题，我需要详细解题过程

what is the value of 3+(-3) ? what is the value of (-10.4) + 10.4 ? these pairs of numbers are called opposites. what is the sum of a number and its opposite? does every number have an opposite? state the opposite of
(a)-2.341 (b)1/3 (c)x (d)x+2 (e)x-2

Answer 1

3+（-3）=0
（-10.4）+10.4=0
以上这两队数被称为相反数，一个数和它自身的相反数的和是多少？每个数都有相反数吗？
写出下面各数的相反数：
(a)-2.341 (b)1/3 (c)x (d)x+2 (e)x-2
(a)2.341 (b)-1/3 (c)-x (d)-（x+2）或 -x-2 (e)-（x-2）或 -x+2

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Answer 2

讲的是相反数。就是相加为0的两个数
(a)-2.341 2.341
(b)1/3 -1/3
(c)x -x
(d)x+2 -x-2
(e)x-2 2-x