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

asked Jul 28, 2017 209k views

1 vote

Solve this:

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

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

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6 votes

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

7.3k points

5 votes

$4x + 5x = 10(x - 2) \iff 9x = 10x -20 \iff -x=-20 \iff x=20$

Sixto Saez answered Aug 3, 2017

6.9k points

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