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38 votes
38 votes
7x+1=8x+3

Please help I did it but it said my answer was wrong

User Fernando Hernandez
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2 Answers

14 votes
14 votes

I did some math and i got this

x = -2

User Denitra
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3.0k points
19 votes
19 votes

Hello.

In order to solve the equation, we need to isolate x.

First, subtract 1 from both sides:


\mathrm{7x+1-1=8x+3-1}


\mathrm{7x=8x+2}

Now, subtract 8x from both sides:


\mathrm{7x-8x=8x-8x+2}


\mathrm{7x-8x=2}


\mathrm{-x=2}

Now, the minus sign is the same as -1.

In order to isolate x, we need to multiply both sides by -1:


\mathrm{x=-2}

Therefore, the answer is


\mathrm{x=-2}

I hope it helps.

Have a nice day.


\boxed{imperturbability}

User Shax
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2.7k points