2(x + 7) + 3x = 12 (given) 2x + 14 + 3x = 12 (?) 5x + 14 = 12 (simplify) 5x = -2 (subtraction) x = - 2 5 (division) What is the missing reason?

asked Nov 18, 2021 215k views

2 votes

2(x + 7) + 3x = 12 (given)

2x + 14 + 3x = 12 (?)
5x + 14 = 12 (simplify)
5x = -2 (subtraction)
x = -
2
5
(division)
What is the missing reason?

by Prom

4.0k points

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1 vote

Answer:

Distributive property

Step-by-step explanation: I just did it lol

Nicola Coretti answered Nov 18, 2021

4.1k points

3 votes

Answer:

$2(x + 7) + 3x = 12 \\ 2x + 14 + 3x = 12 \\ 5x + 14 = 12 \\ 5x = 12 - 14 \\ 5x = - 2 \\ (5x)/(5) = ( - 2)/(5) \\ x = ( - 2)/(5)$

Elig answered Nov 24, 2021

by Elig

3.9k points

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