Pablo mixes 3 units white paint and 1 unit black paint to make gray paint. what two equations show the relationship between units of white paint, w, and units of black paint, b?

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.