Question Simplify the expression 840−7b Evaluate 840−b×7Solution 840−7b Show Solution Factor the expression 7(120−b) Evaluate 840−b×7Use the commutative property to reorder the terms 840−7bSolution 7(120−b) Show Solution Find the roots b=120 Evaluate 840−b×7To find the roots of the expression,set the expression equal to 0 840−b×7=0Use the commutative property to reorder the terms 840−7b=0Move the constant to the right-hand side and change its sign −7b=0−840Removing 0 doesn't change the value,so remove it from the expression −7b=−840Change the signs on both sides of the equation 7b=840Divide both sides 77b=7840Divide the numbers b=7840Solution More Steps Evaluate 7840Reduce the numbers 1120Calculate 120 b=120 Show Solution