Q. Find the missing factor B that makes the equality true.21y4=(B)(7y3)B=□
Identify equation and goal: Identify the given equation and the goal. We are given the equation 21y4=B⋅7y3 and we need to find the value of B that makes this equation true.
Divide by 7y3: Divide both sides of the equation by 7y3 to solve for B. This gives us B=7y321y4.
Simplify right side: Simplify the right side of the equation. Divide 21 by 7 and y4 by y3. This gives us B=3y(4−3)=3y.
Check result: Check the result to ensure there are no mathematical errors. 3y×7y3=21y4, which is the original equation, so the solution is correct.
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