Q. Simplify the expression. Write your answers using integers or improper fractions.−21t+5(−t+21)Answer:
Distribute and Multiply: Distribute the 5 into the parentheses.5×(−t)+5×(21) = −5t+25
Combine Like Terms: Combine the like terms. −21t−5t+25To combine the like terms, we need to find a common denominator for the terms involving t.The common denominator for 21 and 5 is 2, so we convert −5t to −210t.−21t−210t
Add and Convert to Fraction: Add the terms involving t.−(21)t−(210)t=−(21+10)t=−(211)t
Add Constant Term: Add the constant term to the expression.−211t+25This is the simplified expression.
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