8 = (12 - a) - 2, please work out i know a = 2 >.>
2007-07-21 14:50:55 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
ty lol i havent took basic algebra in a while x.x i've been doing pre-calc and my mind's been off the basics =X
2007-07-21 14:57:31 · update #1
You need to solve for "a"
8=(12-a)-2, the original problem
10=(12-a), the result of getting rid of the 2 by adding it to both sides
10=12-a, the result of eliminating the parentheses, because they are all the way around an entire side of the equation
-2=-a, the result of getting rid of the 12 by subtracting it from both sides- make sure to keep the a negative
2=a, the result of multiplying both sides by negative 1 (-1)
a=2
2007-07-21 15:10:15 · answer #1 · answered by wolverine205 3 · 0⤊ 0⤋
8 = (12 - a) - 2
8 = 10 - a
a = 2
2007-07-21 22:21:11 · answer #2 · answered by Anonymous · 0⤊ 0⤋
8 = (12 - a) - 2
10 = 12-a
-2 = -a
a=2
2007-07-21 21:59:51 · answer #3 · answered by ironduke8159 7 · 1⤊ 0⤋
8+2=12-a
10=12-a
10-12=-a
-2=-a
a=2
2007-07-21 21:54:42 · answer #4 · answered by delilah 3 · 0⤊ 1⤋