9a – (8a – 5b) ?
2006-10-06 01:12:37 · 3 answers · asked by Mike l 1 in Education & Reference ➔ Higher Education (University +)
Because of the minus sign, everything inside the parentheses changes its sign when you are simplifying. You are really adding a negative parenthetical to the 9a.
9a - (8a - 5b)
9a + -(8a - 5b)
9a + (-8a + 5b)
9a - 8a + 5b
a + 5b
If the sign in front of the parentheses had been a plus sign, you would have kept the same +/- signs that were in the original parentheses.
2006-10-06 01:39:08 · answer #1 · answered by Jeannie 7 · 1⤊ 0⤋
Removing Parenthesis
First you multiply the negative sign with what is inside the bracket 9a -(8a-5b) = 9a - 8a + 5b
Simplifying
then you subtract the like terms, 9a - 8a then the answer is
a + 5b
2006-10-06 08:37:34 · answer #2 · answered by chinak8 1 · 0⤊ 0⤋
Solve 8a - 5b first to simplify.
2006-10-06 08:21:40 · answer #3 · answered by Anonymous · 0⤊ 1⤋