Sam1300 Sam1300

02-03-2015
Mathematics

contestada

X+3y=5
-2x-6y=-10

Solve using elimination

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apologiabiology apologiabiology

02-03-2015

slimination
multiply first equaiton by 2
2x+6y=10
add to second equiaotn
2x-2x+6y-6y=10-10
0=0
this is true so therfor they are the same equaiton

so solve
x+3y=5
3y=-x+5
y=-1/3x+5/3

subsituter values for x and get valuse for y

if x=2 then y=1

Answer Link

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