What is 21% of 90 estiamate
1 answer:
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<u><em>Answer</em></u>
<u><em>Explanation</em></u>
Based on the given conditions, formulate::
Substitute into
::
Rearrange variables to the left side of the equation:
Calculate the sum or difference:
Divide both sides of the equation by the coefficient of variable:
Cross out the common factor: