The sum of two numbers is 13. Two times the first number minus three times the second number is 1. If you let x stand for the first number and y for the second number, what are the two numbers? wheeeew!
2006-06-26 14:33:25 · 11 answers · asked by arief 1 in Education & Reference ➔ Homework Help
can you solve it? hahahahahaha
2006-06-26 14:39:15 · update #1
x + y = 13
2x - 3y = 1
x = 13 - y
2(13 - y) - 3y = 1
26 - 2y - 3y = 1
26 - 5y = 1
-5y = -25
y = 5
x = 13 - y
x = 13 - 5 = 8
x = 8
y = 5
2006-06-26 14:39:25 · answer #1 · answered by Anonymous · 4⤊ 0⤋
its all about x and y.
ok if X is the first number and y the second number
then X+Y=13(adding the two numbers equals 13)
then 2X-3Y=1(twice the first number means 2 times x and thrice the second number means 3 times X....we subtract them and it equals to 1)
X+Y=13-equation 1
2X-3Y=1-equation 2
using substitution
X=13-Y
then replace in eq 2
2(13-Y)-3Y=1
26-2Y-3Y=1
26-5Y=1
-5Y=-25
y=5
replace in X=13-3Y
X=13-(5)
X=13-5=8
2006-06-26 22:23:33 · answer #2 · answered by Jenny C 1 · 0⤊ 0⤋
x + y = 13 2x - 3y = 1
8+5=13 2x8=16 3x5=15 16-15=1
2006-06-26 21:41:27 · answer #3 · answered by shorte716 6 · 0⤊ 0⤋
Ohhhh! I just finished solving it too. Yeah, the first number is 8 and the second is 5.
2006-06-26 21:41:32 · answer #4 · answered by Knucklehead McSpazatron 2 · 0⤊ 0⤋
x=8 y=5. It was so easy.
2006-06-27 11:02:07 · answer #5 · answered by tonytheskier1 1 · 0⤊ 0⤋
x+y=13
2x-3y=1
x=8, y=5
2006-06-26 23:23:49 · answer #6 · answered by cvo 4 · 0⤊ 0⤋
x+y=13
2x-3y=1
x=13-y
26-2y-3y=1
-25=-5y
y=5
x=8
2006-06-27 01:16:23 · answer #7 · answered by ditto_88_2000 1 · 0⤊ 0⤋
im not confused but i didnt understand barely a word i read
2006-06-26 21:36:47 · answer #8 · answered by fukymangomonky 2 · 0⤊ 0⤋
x=8 and y=5
No it doesn't confuse me
2006-06-26 22:48:57 · answer #9 · answered by Anonymous · 0⤊ 0⤋
sorry on vacation!!!! Schools out!
2006-06-26 21:35:39 · answer #10 · answered by Sammyleggs222 6 · 0⤊ 0⤋