Question

I have another question just like my other one but i dont know how to do this one, Find the solution to each system by the addition (elimination) method....4s-5t=18;6s+10t=-8

Answer 1

s = 2, t = -2

Answer 2

ok so how did you do that please explain?

Answer 3

multiply ur first eqn by 2 and then add it to the second one..ull eliminate the s variable

Answer 4

ok

Answer 5

so like this 2(4s)-2(5t)=2(18), 8s-10t=36, 6s+10t=-8 8s-10t=36
14s=28 s=14/28=.5

Answer 6

s=28/14 =2

Answer 7

right

Answer 8

yes

Answer 9

thats the approach...make the coefficient of one variable the same by multiplying it with a constant..and then eliminate it by adding or subtracting

Answer 10

ok