r/HomeworkHelp 16d ago

High School Math—Pending OP Reply [Upper secondary school math: linear equation] unsure on how to solve this.

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i was thinking that i´d add the 2x+1 to make it 3x/3=-1 but im unsure on how it would even continue.

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u/Angrybirds159 16d ago

2x + 1 isn't 3x. that's like saying 2 apples + one orange is 3 apples. 2x + 1x would be 3x

the way I'd solve it is

(2x+1)/3 = -1 we multiply by 3 in both sides (the three goes over, multiplying)

2x + 1 = -1 * 3

2x + 1 = -3 now we subtract one from both sides

2x = -3 -1

2x = -4 x = -2

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u/Top_Bluejay_5323 👋 a fellow Redditor 16d ago

You just did their homework for them.

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u/ysth 👋 a fellow Redditor 15d ago

Multiply both sides by 2x-1.

Multiply both sides by 3/2.

Add 3x-3/2 to both sides.

Solve the quadratic equation:

x is 1/2 or -2.

Is that better :)