help please
2007-12-11 11:42:13 · 7 answers · asked by kay babez fresh kidd. 1 in Science & Mathematics ➔ Mathematics
first sub. y from both sides
so 3= y-1
now add 1 to both sides.
so 4 = y
2007-12-11 11:45:08 · answer #1 · answered by Plain Silly 4 · 0⤊ 0⤋
OK
Key is to combine and then isolate
y + 3 = 2y -1
y = 2y -4
-y = -4
y = 4
Check
4+3 = 2(4) -1
7 = 7 YES!
Hope that helps.
2007-12-11 19:46:19 · answer #2 · answered by pyz01 7 · 0⤊ 0⤋
y+3=2y-1
-y -y
3=y-1
+1 +1
4=y
2007-12-11 19:50:02 · answer #3 · answered by tinkrbelfreak814 1 · 0⤊ 0⤋
y + 3 = 2y - 1
y + 3 + 1 = 2y - 1 + 1
y + 4 = 2y
y - y + 4 = 2y - y
4 = y
2007-12-11 19:46:14 · answer #4 · answered by yoda 3 · 0⤊ 0⤋
y+3=2y-1
-y=-4
y=4
2007-12-11 19:45:56 · answer #5 · answered by Jason 1 · 0⤊ 0⤋
y=4
subtract y from both sides
add 1 to both sides
you are left with y=4
2007-12-11 19:45:46 · answer #6 · answered by Layne M 3 · 0⤊ 0⤋
y + 3 = 2y - 1 ....... subtract y
3 = y - 1 .............. add 1
4 = y
2007-12-11 19:45:39 · answer #7 · answered by Philo 7 · 0⤊ 0⤋