Answer:
x = 14.5
Explanation:
I don't understand the 1st answer, so I'll have a go.
If you've written it correctly, wouldn't you just add everything up? The parentheses are irrelevant the way it's written:
(6x + 1) + (6x + 5) = 180 becomes:
6x + 1 + 6x + 5 = 180 Combine like terms:
12x + 6 = 180
12x = 174
x = 14.5
But since it doesn't come out to be a whole number, maybe you've written the question wrong? Could it be:
(6x + 1)(6x + 5) = 180
+ 36x + 6 = 180
+ 36x - 174 = 0
Then you could apply the quadratic formula.
You'd get x = 1.75 or - 2.75.
Those are weird numbers, so I suspect your question isn't really the product of those two expressions.