Answer:
21n−15
Step-by-step explanation:
−3(−7n+5)
=(−3)(−7n+5)
=(−3)(−7n)+(−3)(5)
=21n−15
First you must distribute the -3 to the values inside the parentheses. What this means is that you must multiply -3 to -7n and to 5:
(-3*-7n) + (-3*5)
21n + (-15)
21n - 15
Hope this helped!
~Just a girl in love with Shawn Mendes
