Question 424969

-8m-[2(10-5m)+15]=9m 

=> -8m-[20-10m + 15]=9m 

=> -8m-[35 - 10m}= 9m 

=> -8m - 35 + 10m = 9m

=> 2 m -35 = 9m

=> 7m = -35 

=> m = -35/7 = -5

so, m = -5