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2 votes
2 votes
a student says that the solution of 375=x-28 is 347 explain the students error and find the correct answer

User Dmpop
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1 Answer

15 votes
15 votes

The given equation is:

375 = x - 28

To solve the equation:

Collect like terms

The -28 crosses the equality sign to the left and becomes 28

The equation then becomes:

375 + 28 = x

x = 403 (correct answer)

The students error is that when he collected like terms, he did not change the "-" sign in -28 to +

He did 375 - 28 = x

x = 347 (wrong)

User Tanim
by
2.6k points