Question Simplify the expression Solution 215−18r Evaluate 255−40−r×18Use the commutative property to reorder the terms 255−40−18rSolution 215−18r Show Solution Find the roots Find the roots of the algebra expression r=18215Alternative Form r=11.94˙ Evaluate 255−40−r×18To find the roots of the expression,set the expression equal to 0 255−40−r×18=0Use the commutative property to reorder the terms 255−40−18r=0Subtract the numbers 215−18r=0Move the constant to the right-hand side and change its sign −18r=0−215Removing 0 doesn't change the value,so remove it from the expression −18r=−215Change the signs on both sides of the equation 18r=215Divide both sides 1818r=18215Solution r=18215Alternative Form r=11.94˙ Show Solution