2x + y = 4
x + y = 3
2007-09-14 10:26:24 · 4 answers · asked by antwon 1 in Science & Mathematics ➔ Mathematics
2x + y = 4
y=4-2x
x + y = 3
x+(4-2x)=3
-x=-1
x=1
1+y=3
y=2
2007-09-14 10:31:31 · answer #1 · answered by jayphelps321 2 · 0⤊ 0⤋
2x + y = 4
2(1) + 2 = 4
x=1 y=2
2007-09-14 17:32:13 · answer #2 · answered by alexsaldivar_2 2 · 0⤊ 0⤋
The easiest way to solve this is by using elimination
2x+y=4
1x+y=3
you can subtract to get rid of the y and you end up with x=1
Now that you have the x value you can plug it into one of the equations.
2x+y=4
2(1)+y=4
2+y=4
Now bring the 2 to other side to make it y=
and you get y=2
so your final answers are x=1, y=2
2007-09-14 17:37:16 · answer #3 · answered by Physics 101 1 · 0⤊ 0⤋
2x + y = 4
x + y = 3
Subtract the 2nd equation fro the 1st equation getting:
x=1
Put x =1 into 1st equation getting:
2(1) +y = 4 --> y = 2
2007-09-14 17:34:29 · answer #4 · answered by ironduke8159 7 · 0⤊ 0⤋