Question Simplify the expression 74×z−21 Evaluate 74×z−0−0−21Solution 74×z−21 Show Solution Find the roots z=7421Alternative Form z=0.28˙37˙ Evaluate 74×z−0−0−21To find the roots of the expression,set the expression equal to 0 74×z−0−0−21=0Removing 0 doesn't change the value,so remove it from the expression 74×z−0−21=0Removing 0 doesn't change the value,so remove it from the expression 74×z−21=0Move the constant to the right-hand side and change its sign 74×z=0+21Removing 0 doesn't change the value,so remove it from the expression 74×z=21Divide both sides 7474×z=7421Solution z=7421Alternative Form z=0.28˙37˙ Show Solution
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