SOLUTION: 7x - 3x = 80

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Question 571340: 7x - 3x = 80
Answer by nic0le116(25) About Me  (Show Source):
You can put this solution on YOUR website!
Combine like terms. Since 7x and -3x both contain an x, you can subtract them normally. 7x-3x=4x
You're then left with 4x=80
You want want to get x alone.
Divide each side by 4.
You're left with x=20.