the sum of two numbers is 16. when the smaller number is subtracted from two times the larger number the difference is 20. what are the two numbers
2006-11-10 03:17:38 · 7 answers · asked by Rexignis 1 in Science & Mathematics ➔ Mathematics
12 and 4.
2006-11-10 03:22:10 · answer #1 · answered by Tom J 1 · 0⤊ 0⤋
4 and 12
24 - 4 =20
2006-11-10 11:33:03 · answer #2 · answered by Red Alert 1 · 0⤊ 0⤋
4 and 12:
2 x 12 = 24
24 - 4 = 20
2006-11-10 11:22:49 · answer #3 · answered by Anonymous · 0⤊ 0⤋
x>y
x+y=16
2x-y=20
So,
x = 16-y
Substitute...
2(16-y) - y = 20
Distribute
32 -2y - y = 20
Move y's right and numbers left...
12 = 3y
divide out
4 = y
substitute back in
x + y = 16
x + 4 = 16
x = 12
x = 12 and y = 4
Alternatively, you could just add the two equations together:
x + y = 16
2x - y = 20
-----------------
3x + 0y = 36
3x = 36
x = 12
12 + y = 16
y = 4
2006-11-10 11:25:32 · answer #4 · answered by nondescript 7 · 0⤊ 0⤋
4 and 12
24-4 is 20
2006-11-10 11:23:12 · answer #5 · answered by madnesscon 4 · 0⤊ 0⤋
x+y=16
2x-y=20
add the 2 equations together....
x+y+2x-y=16+20
3x=36
x=12
12+y=16
y=4
2006-11-10 11:28:43 · answer #6 · answered by wojopolack 1 · 0⤊ 0⤋
x>y
x+y=16
2x-y=20
Thats about as far as I can get.
2006-11-10 11:21:54 · answer #7 · answered by rhi(09)ler 3 · 0⤊ 0⤋