Could Someone Work With Me With Elimination using Multiplication

unionbay15 · #1 Mar 3, 2007, 03:20 PM

Could someone tell me then answers to these or help me with elimination using multiplication?

1. 2x+3y=6
x+2y=5
2. 2m+3n=4
-m+2n=5

3. 3a-b=2
a+2b=3

noha · Mar 14, 2007, 04:07 AM

2x+3y=6( equ. no. 1)
x+2y=5(muliply this equationbyx2)
it will be(2x+4y)=10(equ.no.2)
the subtact equ. no. 1 with no. 2 as this
2x+3y=6
-
2x+4y=10
it will be -1y=-4 then y =4 then subsitute with any equ. of the above and get the x by knowing y=4 it will be x=-6 apply this on the other equations

ashleypruitt · May 27, 2008, 04:51 PM

it says in my book to solve each system, whatever that means? im clueless..i missed 2 days of school, come back, and don't know how to do it.

theguywithnolife · Jun 2, 2008, 09:04 PM

It means find X and Y so that if u plug them into both equations it'll work



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