How do solve the following linear system?: #-2x + 3y = -19 , x - 3y = -6 #?

Question

↳Redirected from "How does the rate of reaction change with concentration?"

2221 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-03-29T16:54:55

See details below

#-2x+3y=-19#
#x-3y=-6#

We can use three methods to resolve. In this case we will use substitution

Express #x# in second equation #x=-6+3y#. Now make the substitution in the first one

#-2(-6+3y)+3y=-19#. Lets operate and transpose terms

#12-6y+3y=-19#;

#-3y=-19-12=-21#. Then #y=-21/-3=7#

Now lets find #x# from the expresion #x=-6+3y=-6+21=15#

The solution is #x=15# and #y=7#