Question

Determine whether (a) x = -1 or (b) x = 2 is a solution to this equation

Answer 1

2x-1=3

2x=3+1

2x=4

x=2

Answer 2

`\huge\boxed{\underline{\bf \: Answer}}`

(a) Let's try with x = - 1

`\sf \: 2x - 1 = 3 \\\sf 2( - 1) - 1 = 3 \\ \sf- 2 - 1 = 3 \\ \\ \boxed{\bf- 3 \: \bcancel= \: 3}`

So, x = - 1 is not the solution to the given equation.

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(b) Now, try with x = 2

`\sf2x - 1 = 3 \\ \sf2(2) - 1 = 3 \\ \sf4 - 1 = 3 \\ \\ \boxed{\bf3 = 3}`

Yes, we can see that x = 2 is the correct solution for the equation.

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Hope it helps.

RainbowSalt2222