SOLUTION: -1.2x+20 = -2.8x+28

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Question 120340: -1.2x+20 = -2.8x+28
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
-1.2x%2B20=-2.8x%2B28 Start with the given equation


10%28-1.2x%2B20%29=10%28-2.8x%2B28%29 Multiply both sides by 10 to move the decimal on each number 1 time. This will make every number a whole number.

-12x%2B200=-28x%2B280 Distribute and multiply


-12x=-28x%2B280-200Subtract 200 from both sides


-12x%2B28x=280-200 Add 28x to both sides


16x=280-200 Combine like terms on the left side


16x=80 Combine like terms on the right side


x=%2880%29%2F%2816%29 Divide both sides by 16 to isolate x



x=5 Divide

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Answer:
So our answer is x=5