if 45 28 37 15 58 then is equal to, Simplification, General Mathematics

Question:If `45 - [28 - {37 - (15 - *)}] = 58`,Then * is equal to.

A `-19` 
B `19` 
C `29` 
D `-29`

/94

+ AnswerB

+ ExplanationLet,`45 - [28 - {37 - (15 - x )}]= 58`.

`Then 45 - [28 - {37 - 15 + x}] = 58`

or `45 - [28 - (22 + x}]= 58`

or `45 - [28 - 22 - x]= 58`

or `45 - [6 - x]= 58`

or `45 - 6 + x = 58`

or ` 39 + x = 58`

or `x = (58 - 39)= 19`.

+ Report

Descriptive on Simplification Ebook

Total Preview: 679