How many solutions does 4x+2y=-8,2x+y=4

Mathematics

2 answers:

Sergeu [11.5K]3 years ago

8 0

It has alot of solutions you can pick from

sweet-ann [11.9K]3 years ago

7 0

0=0
Infinite solutions

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castortr0y [4]

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Step-by-step explanation:

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we can be sure this answer is correct because the other answers are clearly too big

here's your answer, hope this helps :)

3 0

3 years ago

X-4y-8=6/8+-8y-2y<br>5y-3(6-7/8)=5x-4y+3

Ivan

First simplify

x-4y-8=3/4-10y
add 10y both sides and add 8
x+6y=8+3/4
times 4 both sides
4x+24y=32+3
4x+24y=35

5y-3(6-7/8)=5x-4y+3
add 4y both sides
9y-3(6-7/8)=5x+3
distribute
9y-18+21/8=5x+3
minus 5x both sides
9y-5x-18+21/8=3
add 18 to both sides and minus 21/8 both sides
9y-5x=21-21/8
times 8 both sides
72y-40x=147
72y-40x=147

so we got

24y+4x=35
72y-40x=147

multiply first equation by -3 and add to 2nd

-72y-12x=-105
72y<span>-40x=147 +</span>
0y-52x=42

-52x=42
divide both sides by -52
x=-21/26
sub back

24y+4x=35
24y+4(-21/26)=35
using math
y=497/312

the solution is
$( \frac{-21}{26}, \frac{497}{312} )$

8 0

3 years ago