Which algebraic expression is equivalent to the expression below?2(x - 5) + 13(x + 7) A. 15x + 81 B. 15x + 101 C. 15x + 8 D. 26x + 81
Question
Which algebraic expression is equivalent to the expression below?
2(x - 5) + 13(x + 7)
A. 15x + 81
B. 15x + 101
C. 15x + 8
D. 26x + 81
Solution
To find the equivalent algebraic expression, we first need to distribute the numbers outside the parentheses to the terms inside the parentheses.
For the first part, 2(x - 5), distribute 2 to both x and -5: 2x = 2x 2-5 = -10
So, 2(x - 5) becomes 2x - 10.
For the second part, 13(x + 7), distribute 13 to both x and 7: 13x = 13x 137 = 91
So, 13(x + 7) becomes 13x + 91.
Now, add the results together: (2x - 10) + (13x + 91) = 2x + 13x - 10 + 91 = 15x + 81
So, the equivalent algebraic expression is 15x + 81, which corresponds to option A.
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