SOLUTION: {{{x+3x+6x-20=180}}} x=10 How do you come up with answer 10 for x?

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Question 569689: x%2B3x%2B6x-20=180 x=10 How do you come up with answer 10 for x?
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
x%2B3x%2B6x-20=180
10x-20=180
10x=200
x=20
x doesnot equal 10
to prove it put 10 in place of x and solve
.
x%2B3x%2B6x-20=180
10%2B30%2B60-20=180
100-20=180
80=180
incorrect
.
x%2B3x%2B6x-20=180
20%2B60%2B120-20=180
180=180
correct highlight%28x=20%29