7x+1=8x+3 Please help I did it but it said my answer was wrong

Question

asked Sep 20, 2023 186k views

2 Answers

Varus Septimus · Answer 1 · 2023-09-25T01:20:22+0000

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.

$\boxed{imperturbability}$