Sam1300 Sam1300

02-03-2015
Mathematics

contestada

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

Solve using elimination

Respuesta :

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

Otras preguntas

Round 13 513 to the nearest thousand

What do you mean by corrosion? How can you prevent it?

I = {1, 2} List all possible subsets of the given set.

A construction contractor is purchasing granite tiles for a new kitchen floor. Each tile costs $5 and he wants to spend less than $1,500. The size of each tile

Solve the system of equations.3x+3y+6z=33x+2y+6z=74x+4y+7z=4

Question: 35/8 ( write as mixed number ) Please help me very very quickly!!!!!!!!!!!!!!!!!!!

2(n-3)=4n+1 this sucks not knowing the answer

. What are three factors that could contribute to a source not being credible?

A construction contractor is purchasing granite tiles for a new kitchen floor. Each tile costs $5 and he wants to spend less than $1,500. The size of each tile

Solve the system of equations.3x+3y+6z=33x+2y+6z=74x+4y+7z=4