What is the y-value in the solution to this system of linear equations?

4x + 5y = −12

-2x + 3y = −16

a: −4
b: −2
c: 2
d: 5

Write two subtraction equations that are equivalent to 5 + 12 = 17.

The area (a) of a circle with a radius of r is given by the formula and its diameter (d) is given by d=2r. arrange the equations in the correct sequence to rewrite the formula for diameter in terms of the area of the circle.

How do i take any fraction and make it into a decimal or percentage?