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Solve this: 4x + 5x = 10(x - 2) Please, answer ASAP as my sheet is due in 10 minutes.

Solve this: 4x + 5x = 10(x - 2) Please, answer ASAP as my sheet is due in 10 minutes.
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1 vote
Solve this:

4x + 5x = 10(x - 2)

Please, answer ASAP as my sheet is due in 10 minutes.

User Elad Lachmi
by
8.9k points

2 Answers

6 votes
4x + 5x = 10x - 20
9x = 10x - 20
-x = -20
x = 20

User Tommi Gustafsson
by
8.4k points
5 votes

4x + 5x = 10(x - 2) \iff 9x = 10x -20 \iff -x=-20 \iff x=20
User Sixto Saez
by
8.5k points
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