If 15 - (2x +7) = 14 then what’s the value of x

Suppose that x and y are both differentiable functions of t and are related by the given equation. use implicit differentiation with respect to t to determine startfraction dy over dt endfraction in terms of x, y, and startfraction dx over dt endfraction .

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

Anyone know? will mark brainliest if correct