lauranell72110 lauranell72110

08-12-2019
Mathematics

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- 3x + 21- x = 2x + 20 ?

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awesomekacy awesomekacy

08-12-2019

Answer:

x = 1/6

Step-by-step explanation:

- 3x + 21 - x = 2x + 20

Subtract 20 from each sides

- 3x + 21 - 20 - x = 2x + 20 - 20

-3x + 1 - x = 2x

Combine like terms

-3x - x + 1 = 2x

-4x + 1 = 2x

Add 4x on each sides

-4x + 4x + 1 = 2x + 4x

1 = 6x

Divide both sides by 6

1/6 = 6x/6

1/6 = x

The answer is x = 1/6

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