Determining a Multiplier
Quick
Check
Consider the system of equations.
x-3y=9
15 x - 2y = -1
1
Which number can be multiplied by the second equation to eliminate the x-variable when the equations are adde
together?
0 -10
11) Intro
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The right of a lender to refuse a loan if the borrower hasn't repaid previous loans on time

1. 8 or -82. 14 or -143. -11, -3, 0, 7, 10

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.