If you were to solve the system using the addition method, what would you multiply the first equation by in order to make the x'

Question

Nitella [24]

3 years ago

9

If you were to solve the system using the addition method, what would you multiply the first equation by in order to make the x'

s add out of this system? -2x + 3y = 6 4x - 2y = 8

Mathematics

1 answer:

Inessa05 [86] · Answer 1 · 2022-04-22T06:48:55+03:00

Inessa05 [86]3 years ago

7 0

2 times 2=4
multiply first equation by 2 to get
-4x+6y=12
then add to get

-4x+6y=12
<u>4x-2y=8 +</u>
0x+4y=20

4y=20
y=5

sub back
-2x+3y=6
-2x+3(5)=6
-2x+15=6
-2x=-9
x=9/2=4.5

the number to multiply by is 2