Which state about the equation is true x + 2 = x + 4

Isaac wants the equation below to have no solution when the missing number is placed in the box. which number should he place in the box?

Astrid spent $36 on new shoes. this was $12 less than twice what she spent on a new skirt. part a: which equation would solve for how much she spent on the skirt? part b: solve the equation in the workspace provided below. how much did astrid spend on her skirt?

Consider the linear function that is represented by the equation y= 4x+5