4m-5(m+2)=1
Will somebody please help me solve this, solve for m and the 5 is subtraction.

Question

4m-5(m+2)=1
Will somebody please help me solve this, solve for m and the 5 is subtraction.

johnjules2000 · Answer

thank you

anonymous · Answer

isn't it m=-11

the_fizicx99 · Answer

Typo,

4m-5(m+2)=1

4m - 5m -10 = 1

-m - 10 = 1
   +10    +10

-m = 11
/-1    /-1

M= -11



4(-11)-5(-11+2)=1

-44 +55 + 10 = 1

11 - 10 = 1

1 = 1 so this is true

johnjules2000 · Answer

how did you figure that out? i might need to know for future reference.

the_fizicx99 · Answer

I applied distributive property to -5(m+2)

4m - 5m -10 = 1

Then you combine like terms, 4m-5m = -1m or just -m

-m - 10 = 1

You want to isolate m, so the inverse of subtraction is addition, add 10 to both sides 

-m = 11

m can't be negative so divide by -1

-m  = 11
/-1    /-1

m = -11