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07-12-2020
Mathematics

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solve for x: 12x-9=2×+21

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diaz202020 diaz202020

07-12-2020

Answer:

x = 3

Step-by-step explanation:

12x - 9 - 2x = 2x + 21 - 2x

10x - 9 = 21

10x - 9 + 9 = 21 + 9

10x = 30

10x ÷ 10 = 30 ÷ 10

x = 10

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