Question

please help it is math

Answer 1

Step-by-step explanation:

(−3)m+1×(−3)5=(−3)7=>(−3)m+1×(−15)=(−21)=>−3m+1×(−15)=−21=>−3m+(−15)=−21=>−3m−15=−21=>−3m=−21+15=>−3m=−6(−and−cancelled)=>m=6÷3=>m=2

mark it please brainlist

mark it please brainlist

mark it please brainlist