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3 years ago

10

Solve for x. Worth 20 pts.

1 answer:

Vinvika [58]3 years ago

6 0

You’d set up a proportion. I did 25/15=7x-40/18.
Then you would cross multiply to get 15(7x-40)=450
Distribute the 15.
105x-600=450
Add 600 to both sides, so the -600 cancels out.
Then you’re left with 105x=1050
Divide both sides by 105 and you get x=10

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