Question #abbc0

Question

Question #abbc0

1 Answer

Related questions

How do you solve systems of equations using the substitution method?
How do you check your solutions to a systems of equations using the substitution method?
When is the substitution method easier to use?
How do you know if a solution is "no solution" or "infinite" when using the substitution method?
How do you solve $y = - 6 x - 3$ $y=-6x-3$ and $y = 3$ $y=3$ using the substitution method?
How do you solve $12 y - 3 x = - 1$ $12y-3x=-1$ and $x - 4 y = 1$ $x-4y=1$ using the substitution method?
Which method do you use to solve the system of equations $y = \frac{1}{4} x - 14$ $y=1/4x-14$ and $y = \frac{19}{8} x + 7$ $y=19/8x+7$ ?
What are the 2 numbers if the sum is 70 and they differ by 11?
How do you solve $x + y = 5$ $x+y=5$ and $3 x + y = 15$ $3x+y=15$ using the substitution method?
What is the point of intersection of the lines $x + 2 y = 4$ $x+2y=4$ and $- x - 3 y = - 7$ $-x-3y=-7$ ?

Impact of this question

970 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-03-04T15:04:39

$(x, y) = (- 4, 5)$ $(x,y)=(-4,5)$

Explanation:

If $3 x + 4 y = 8$ $3color(red)x+4y=8$
and $x = 16 - 4 y$ $color(red)x=color(red)(16-4y)$
then
$XX 3 (16 - 4 y) + 4 y = 8$ $color(white)("XX")3(color(red)(16-4y))+4y=8$

$XX 48 - 12 y + 4 y = 8$ $color(white)("XX")48-12y+4y=8$

$XX 40 = 8 y$ $color(white)("XX")40=8y$

$XX y = 5$ $color(white)("XX")y=5$

and since $x = 16 - 4 y$ $x=16-4y$
$XX x = 16 - 4 \cdot 5 = - 4$ $color(white)("XX")x=16-4 * 5=-4$

Science

Math

Humanities

... and beyond

Question #abbc0

1 Answer

Explanation:

Related questions

Impact of this question