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tamira

how to find x in a equation

what values(S) of x will make each equation below true ?

A. x+5=5

B. 2x-6=3x+1-x-7

C. 3x+1=43

D. 4x-1=4x+7

Posted in Algebra, asked by tamira, 2 years ago. 880 hits.

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A. x=0, as you need to subtract five from both sides for you to have only the x on the left side and the value of x on the right side.

B. 2x-6=(3x-x)+(1-7)

2x-6=2x-6

0=0

therefore, all real numbers are accepted values of x.

 

C. 3x+1=43

3x=42

x=14

 

D. 4x-1=4x+7

4x=4x+8

0=8, which is wrong

therefore, there are no accepted value of x.

Earl Erik Rodil
Earl Erik Rodil - 2 years ago
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