2006-12-21 04:13:26 · 10 answers · asked by shane r 1 in Science & Mathematics ➔ Mathematics
First, you need to find the LCD(lowest common denominator), which is 36 because 12*3=36 and 18*2=36.
Second, multiply the 1st fraction by 3(top and bottom) so 7/12,
7*3=21; 12*36; is now 21/36.
Third, multiply the 2nd fraction by 2(top and bottom) so -5/18,
-5*2=-10; 18*2=36; is now -10/36
New equation is:
a+21/36=-10/36
subtract 21/36 from both sides
a=-31/36
2006-12-21 10:45:04 · answer #1 · answered by wheels 2 · 2⤊ 0⤋
a +7/12=-5/18
a=-5/18-7/12
a=-(10+21)/36= - (31/36).
2006-12-21 15:32:15 · answer #2 · answered by Rex 1 · 2⤊ 0⤋
a + 7/ 12 = -5 / 18
a = -5/18 -7/12 =( -10 - 21 )/36
a = -31/36 Ans
2006-12-21 12:36:36 · answer #3 · answered by ATS 2 · 4⤊ 0⤋
Multiply both sides from 36 to get rid of the fractions:
36(a+7/12)=36(-5/18)
36a+21=-10
Subtract 21 from both sides:
36a=-31
Divide 36 from both sides:
a=-31/36
Check:
-31/36+7/12=-5/18
-31/36+21/36=-5/18
-10/36=-5/18
-5/18=-5/18
2006-12-21 13:53:05 · answer #4 · answered by Anonymous · 2⤊ 0⤋
a +7/12 = -5/18 what is a??
a = -7/12 - 5/18
a= -21/36 - 10/36
a = -31/36
2006-12-21 12:17:29 · answer #5 · answered by ironduke8159 7 · 4⤊ 0⤋
First: get rid of fractions > take the denominators and multiply them by everything:
12(18)(a) + 12(18)(7/12) = 12(18)(-5/18)
Next, cancel "like" terms:
12(18)(a) + 18(7) = 12(-5)
216a + 126 = -60
Second: subtract 126 from both sides > opposite side means opposite sign:
216a + 126 -126 = -60 - 126
216a = -186
Third: solve for "a" by keeping it on one side > divide both sides by 216:
216a/216 = -186/216
a = -31/36
2006-12-21 13:11:54 · answer #6 · answered by ♪♥Annie♥♪ 6 · 3⤊ 0⤋
a +7/12 = -5/18
You can take small steps to clear the fractions - note that the denominators are each divisible by 6
6a + 7/2 = -5/3 {multiply by 6}
36a + 21 = - 10 {multiply by 6 again}
36a = - 31
a = - 31/36
2006-12-21 12:23:09 · answer #7 · answered by kindricko 7 · 4⤊ 0⤋
a
=-7/12-5/18
=-21/36-10/36
=-31/36
2006-12-21 12:19:32 · answer #8 · answered by openpsychy 6 · 4⤊ 0⤋
a + 7/12 = -5/18
a + 21/36 = -10/36
a = -31/36
QED
2006-12-21 12:56:44 · answer #9 · answered by CSUFGrad2006 5 · 4⤊ 0⤋
a is the first alphabet of Roman Script.
2006-12-21 13:00:40 · answer #10 · answered by silver_sunil 1 · 0⤊ 4⤋