Question

alright i dont know how to do this.
x=16-4x
3x+4y=8

Answer 1

do you know it?

Answer 2

first make x at left had side
x+4x= 16
5x = 16
x = 16/5
then
3x+4y =8
4y =8 -3x
y = 1/4(8 - 3x)
insert x
y = 1/4(8 - 3(16/5))
y =-2/5

Answer 3

but my teacher says it shouldnt be a fraction

Answer 4

you type the question wrong

Answer 5

well thats how it is on my paper

Answer 6

for : x=16-4y; 3x+4y=8
x =5 and y = 11/4

Answer 7

okay thanks:)

Answer 8

how do you solve it?

Answer 9

like wrok it out please?

Answer 10

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Answer 11

x=16-4y as first equation,
3x+4y=8 change to 3x=8-4y then to x=1/3(8-4y) and take as second equation
first equation = second equation as x = x
16-4y =1/3(8-4y)
3(16-4y)= 8-4y
48-12y = 8 -4y
48-8 = 12y -4y
40 = 8y
5 = y
then insert y=5
into x=16-4y
x =16-4(5)
x= -4

then x=-4 and y=5

Answer 12

sorry for miscalculating b4

Answer 13

its okay i was just confused