2007-10-10 13:31:10 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
typing
multiply through both sides by 7 to get rid of the fraction
21 - a = -14
Now get the a by itself
-a = -35
a = 35
then
2007-10-10 13:33:46 · answer #1 · answered by Ms. Exxclusive 5 · 1⤊ 1⤋
is it (3-a) over 7 or 3 - (a over 7)?
3-a/7 = -2
multiply by 7 3-a = -14
subtract 3 -a = -17
times -1 a = 17
3 - (a/7) = -2
subtract 3 -a/7 = -5
times - 7 a = 35
2007-10-10 20:35:02 · answer #2 · answered by Blackbird 5 · 0⤊ 0⤋
3 - 5 = - 2, right?
so just set a/7 = 5
a = 35
2007-10-10 20:34:07 · answer #3 · answered by Axis Flip 3 · 0⤊ 0⤋
3 - a / 7 = - 2
- a / 7 = - 5
a / 7 = 5
a = 35
2007-10-14 13:37:17 · answer #4 · answered by Como 7 · 0⤊ 0⤋
3 - a/7 = -2
-3 -3 - subtract three on both sides
-a/7= -5
x7 x7 - multiply by seven on both sides
-a = -35 - divide by negatvie one on both sides
a = 35
2007-10-10 20:35:45 · answer #5 · answered by Anonymous · 0⤊ 0⤋
subtract 3 on both sides -a/7=-5
then multiply -7 to both sides which leaves a=35.
2007-10-10 20:34:05 · answer #6 · answered by DiDude 5 · 0⤊ 0⤋
3-a/7=-2
or (21-a)/7=-2
or 21-a=-14
or -a=-14-21=-35
or a=35
2007-10-10 20:36:33 · answer #7 · answered by MAHAANIM07 4 · 0⤊ 0⤋
yeah i'm pretty sure it's 35
2007-10-10 20:36:47 · answer #8 · answered by Anonymous · 0⤊ 0⤋