Q. Simplify the expression. Write your answers using integers or improper fractions.−3k+21(23k−3)Answer:
Distribute fractions in parentheses: Distribute the (1/2) across the terms inside the parentheses.We have the expression −3k+(1/2)((3/2)k−3). To simplify, we first need to distribute the (1/2) to both (3/2)k and −3.−3k+(1/2)(3/2)k−(1/2)(3)
Multiply fractions: Multiply the fractions.Now we multiply the fractions (21) and (23)k, and (21) and 3.−3k+(21×23)k−(21×3)
Simplify multiplication: Simplify the multiplication of the fractions. (21×23)=43 and (21×3)=23, so we substitute these back into the expression.−3k+(43)k−23
Combine like terms: Combine like terms.We combine the terms with k in them, which are −3k and (3/4)k.To combine them, we need a common denominator, which is 4. So we convert −3k to (−12/4)k.(−12/4)k+(3/4)k−3/2
Add coefficients of k: Add the coefficients of k.Now we add (−412) and (43) together.(−412+43)k−23
Simplify addition: Simplify the addition. −412+43=−49, so we substitute this back into the expression. (−49)k−23
Final simplified expression: The expression is now simplified. The simplified expression is (−49)k−23.