Question

15 solve for x. answer: 7x + 7 6x + 16

Explanation:

Step1: Set the two expressions equal

Assume the two expressions represent equal - side lengths or equal - angle - related values (since no other context is given, we assume they are equal). So, $7x + 7=6x + 16$.

Step2: Subtract $6x$ from both sides

$7x-6x + 7=6x-6x + 16$, which simplifies to $x + 7=16$.

Step3: Subtract 7 from both sides

$x+7 - 7=16 - 7$.

Answer:

$x = 9$