Question Simplify the expression −35+21b Evaluate (5−3b)(−7)Multiply the terms −7(5−3b)Apply the distributive property −7×5−(−7×3b)Multiply the numbers −35−(−7×3b)Multiply the numbers −35−(−21b)Solution −35+21b Show Solution Find the roots b=35Alternative Form b=1.6˙ Evaluate (5−3b)(−7)To find the roots of the expression,set the expression equal to 0 (5−3b)(−7)=0Multiply the terms −7(5−3b)=0Change the sign 7(5−3b)=0Rewrite the expression 5−3b=0Move the constant to the right side −3b=0−5Removing 0 doesn't change the value,so remove it from the expression −3b=−5Change the signs on both sides of the equation 3b=5Divide both sides 33b=35Solution b=35Alternative Form b=1.6˙ Show Solution