angelj0613
contestada

Allen subtracts (11x + y) from (ax + 6y). His correct answer is − 10x + 5y. What is the value of a? ***Step By Step Solve****

Respuesta :

jemendivil28

If his correct answer is -10x+5y, and what he had before was ax+6y-11x+y. Then you have to look at ax and -11x only.

Meaning:

-10x=ax-11x           *what minus 11 is equaled to -10?*

-10x=-21x-11x        *-21 minus 11 gives you -10*

So, a=-21


tramserran

(ax + 6y) - (11x + y)  = -10x + 5y

ax +6y   - 11x - y    = -10x + 5y

(ax - 11x)  + (6y - y) = -10x + 5y

Set the x's equal to the x's and the y's equal to the y's

ax - 11x = -10x           6y - y = 5y

 ax  = 11x -10x              5y = 5y

      ax = x                     5 = 5

       a = 1                      TRUE  (TRUE statement for "y" just means infinite sol'ns)

Answer: a = 1


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