78 = -2(m+3)+mSolve for m

⚑ Flag

78 = -2(m+3)+m             78= -2m-6+m                 Use Distributive property 78= -m-6                          combine like terms  +6    +6                            add 6 on both sides 84= -(1)m                         Divide -1 on both sides -84= m                             Answer  

m=84