I acaditally picked the wrong answer

Find the value of x for which abcd must be a parallelogram -9-6x x-30

Is it greater than or less than7*3_9*2

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.