Answer: nope!
Explanation:
first, we have to plug in 5 for x in the equation. for x to be a solution, both sides of the equation need to be equal to each other!
2(5+7)-1 = (5+2)+(5+3)
** very important rule: always solve what's in the parentheses first!!
PEMDAS!!
2(12)-1 = (7)+(8)
next, solve what's right next to the parentheses, because you're multiplying the number in the parentheses by the number right next to it.
2(12) = 24
24-1=7+8
now, solve each side.
24-1 = 23
7+8 = 15
23 = 15.
as you can see, these numbers do not equal one another! therefore, x = 5 is NOT a solution to the equation.