sweetnikki40 sweetnikki40

08-07-2017
Mathematics

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Is -3 a solution for the equation 2x + 4=2

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Аноним Аноним

08-07-2017

No.

Let's solve the equation.

2x = 2-4

2x = -2

2x/2 = -2/2

x = -1

The only solution is -1

If you substitute -3 to x

2(-3) + 4 = 2

-6 + 4 = 2

-2 = 2 (so not true)

If we substitute -1

2(-1) + 4 = 2

-2 + 4 = 2

2 = 2

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