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Sagot :
[tex]5(x-5)=15\\5x-25=15\ \ (ok)\\5x-25=15-25\ \ \ the\ first\ error\ in\ the\ solution\\ \\Ans.\ B\ line\ 3[/tex]
Answer : B. line 3
5(x-5)=15 ----> 1
We remove the parenthesis by distributing 5 inside the parenthesis.
5x - 25 = 15 ----> 2
To get rid of -25, add 25 on both sides
5x - 25 + 25 = 15 + 25 ----> 3
5x = 40 ----> 4
Divide by 5 on both sides
x = 8
From the given options we can see that there is a error in line 3.
Instead of adding 25 , they subtracted 25
So line 3 shows the first error.
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