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Chapter 9: Q. 389 (page 1108)

For the equation x+12=x:

(a) Is x=4a

solution?

(b) Is x=-3a solution?

Short Answer

Expert verified

Part (a) : The valuex=4is a solution and
Part (b) : x=-3is not a solution to the equation

Step by step solution

01

Part (a) Given information

Given the equationx+12=x

02

Part (a) Step 2: Substituting and checking

Substituting, we get

x+12=x4+12=416=44=4

Its true so it is a solution to the equation

03

Part (b) Step 1: Given information

Given the equationx+12=x

04

Part (b) Step 2: Substituting and checking

Checking, we get

-3+12=-39=-33=-3

Its not true so it is not a solution to the equation

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