3y-7y=28
2007-09-24 18:13:25 · 7 answers · asked by Mariana O Moustro 1 in Science & Mathematics ➔ Mathematics
3y - 7y = -4y
y = -7
2007-09-24 18:19:44 · answer #1 · answered by supastremph 6 · 0⤊ 0⤋
First, you can reduce the left side of the equation.
3y - 7y = -4y
That gives you -4y = 28
Divide both sides of the equation by -4 and you get:
y=28 / -4
28 divided by -4 = -7 so,
y= -7
2007-09-24 18:20:57 · answer #2 · answered by STEVE C 4 · 0⤊ 0⤋
3y-7y=28
-4y=28
y=28/-4
y=-7
2007-09-24 18:20:37 · answer #3 · answered by Anonymous · 0⤊ 0⤋
3y-7y=28
-4y = 28
Divide both sides of the equation by -4 to solve for y.
-4y / -4 = 28 / -4
y = -7
2007-09-24 18:18:24 · answer #4 · answered by edith p 3 · 0⤊ 0⤋
3y-7y = 28
(3y-7y= -4y)
-4y = 28
bring the -4 over (or so-call divide by -4)
therefore,
y = -7
2007-09-24 18:21:12 · answer #5 · answered by Anonymous · 0⤊ 0⤋
3y-7y=28
1) subtract the y's. it'll then become -4y=28.
2) then to solve for y, you have to get y by itself. for this problem you divide both sides by -4. so y=28/-4.
3) then you get the answer of y=-7
2007-09-24 18:22:36 · answer #6 · answered by Anonymous · 0⤊ 0⤋
3y-7y is -4y.
-4y=28, divide both sides by -4.
y = -7
2007-09-24 18:18:43 · answer #7 · answered by slider 2 · 0⤊ 0⤋