Here Are The the directions: Solve For X and Y in the following problems....
Question: X + Y=8 , X + 2Y =14
2006-09-20 08:27:29 · 11 answers · asked by Kelly P 1 in Education & Reference ➔ Homework Help
x+2y=14
x+y=8
subtracting
y=6
substituting
x+12=14 x=2
the solution set is {2.6}
2006-09-20 08:30:31 · answer #1 · answered by raj 7 · 0⤊ 1⤋
Is this supposed to be a system of equations? If it is, you can change the first equation to x = 8 - y and then substitute for x in the second equation.
x + 2y = 14
8 - y + 2y = 14
8 + y = 14
y = 6
If y = 6, then x = 2 by substitution.
2006-09-20 08:31:24 · answer #2 · answered by PatsyBee 4 · 0⤊ 1⤋
X=8-Y
8-Y+2Y=14
Y+8=14
Y=6
X=2
2006-09-20 08:48:47 · answer #3 · answered by suzanna_banana 3 · 0⤊ 1⤋
x+2y=14
x+y=8 solve for y y=8-x and substitute in 1st equation
x+2(8-x)=14
x+16-2x=14
-x+16=14
-x=-2
x=2
y=6
2006-09-20 08:31:40 · answer #4 · answered by niagarafrog 2 · 0⤊ 1⤋
Hmm, seems like substitution would work in this case. Is that whay you're supposed to use.
Lets rewrite x+y=8 in terms of y as in:
y=8-x
Then we substitute the y in the second problem:
x+2(8-x)=14
x+16-2x=14
-x=-2
x=2
Plug 2 in for x in either case and solve for y
2+y=8
y=6
Yes?
2006-09-20 08:33:53 · answer #5 · answered by Scank B 2 · 1⤊ 1⤋
Hi
The answer is X = 2
Y = 6
2006-09-20 08:35:39 · answer #6 · answered by jmt1156 2 · 0⤊ 1⤋
(1) X+Y=8
(2) X+2Y=14
(1) can be converted to X=8-Y
Substituting (1) into (2) you get 8-Y+2Y=14
Simplify to
8-Y=14
Y=6
X=2
2006-09-20 08:33:11 · answer #7 · answered by bmaldon04 2 · 0⤊ 1⤋
x+y=8
x+2y=14
x+y=8
y=6
x=2
y=6
2006-09-20 08:31:22 · answer #8 · answered by Superconductor 3 · 0⤊ 1⤋
no solution b/c if you divided 2 into 14 it = 7 and right before it it said x+y =8
2006-09-20 08:30:51 · answer #9 · answered by chalz h 2 · 0⤊ 1⤋
X+2Y=14
X+Y=8
....................
Y=6 (on substracting)
X+6=8
X=8-6
X=2
so solution stet is (2,6)
you can do this question by substitution also.
2006-09-20 08:33:17 · answer #10 · answered by flori 4 · 0⤊ 1⤋