Question

6x + 2y = 0
4x + y = -1
solve using substitution

Answer 1

6x + 2y = 0
4x + y = -1 ---> y=-1-4x
put y in first equation
6x+2(-1-4x)=0
6x-2-8x=0
-2x=+2
x=-1
now put x in one of equation

Answer 2

Thank you!!

Answer 3

x + 3y = -5
2x - y = 18

Answer 4

work out what x is equal to in the first equation, the top one.

Answer 5

it's \[x = -5-3y\]

Answer 6

x+3y=-5
=3y=-5+x=
=y=-5/3+x/3

Answer 7

2x-y=18
_y=18-2x
soooo
replace in the first equation y by the answer above
x+3(18-2x)=-5
x+54-6x=-5
x-6x=-5-54
-5x=-59
x=-59/-5
x=59/5

Answer 8

\[2(-5-3y)-y=18\]
\[-10-6y-y=18\]
-7y =28

y= -4

Answer 9

@julian9922 x= 7 and y = -4