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25 votes
What is x in 2x − 3 + 4x = 21

2 Answers

1 vote
So first to rearrange the question so like terms are together

2x + 4x = 21 - 3

Then simplify

6x = 18

Then divide 6 to both sides to find x

X=3

Hope this helps!
User Hydrogen
by
3.9k points
10 votes

Answer: x = 4

Explanation:

2x - 3 + 4x = 21

6x - 3 = 21

6x - 3 (+3) = 21 (+3)

6x = 24

24/6

x = 4

User Hyejung
by
4.0k points