Question 69590: 2(x+5)-x-4=7
Answer by bucky(2189)   (Show Source):
You can put this solution on YOUR website! 2(x+5)-x-4=7
First do the distributive multiplication by multiplying the two terms in the parentheses by the leading 2. This results in:
2x + 10 - x - 4 = 7
Next combine the 2x with the -x to get just x. When you do the equation becomes:
x + 10 - 4 = 7
Then combine the +10 and the -4 to get +6 which makes the equation:
x + 6 = 7
Then subtract 6 from both sides so that it no longer appears on the left side:
x = +1
That is the answer. Check it by substituting +1 for x in the original problem to get:
2(1+5) - 1 - 4 = 7
Add the numbers in parentheses to get:
2(6) - 1 - 4 = 7
12 - 1 - 4 = 7
11 - 4 = 7
7 = 7
Since this is a true statement, the answer x = 1 is correct.
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