Its for my math homework.
2006-10-04 13:26:34 · 10 answers · asked by Sabrina J 1 in Science & Mathematics ➔ Mathematics
8a+a-7-15a= -6a-7
2006-10-04 13:31:36 · answer #1 · answered by Noble 4 · 0⤊ 1⤋
8a + a - 7 - 15a
collecting the like terms one with unknown term 'a' the other one is a constant.
8a + a - 15a - 7
-6a - 7
This is the answer after collecting the like terms.
2006-10-04 13:36:51 · answer #2 · answered by Sindhoor 2 · 1⤊ 1⤋
8a + 1 a is 9a
9a - 15 a is -6a
so the answer is -6a -7
2006-10-04 13:50:59 · answer #3 · answered by mom 7 · 1⤊ 0⤋
you have two kind of terms: constant (7) and the variables (those with an a. you can't add constants and variables, but you can add constant with constant and variable with variable.
on the constant side you have a 7 alone, whereas on the varable side you have 8a, a and -15a. these, you can add together, like you add 8 and 1 and -15 of something --called a-- so you have a certain number of a's plus 7.
2006-10-04 13:32:06 · answer #4 · answered by edmonddantes1986 2 · 0⤊ 1⤋
8a-7-15a=0
collect like terms
(8-15)a-7
-7a-7=0
2006-10-04 13:47:19 · answer #5 · answered by James_Solo501st 1 · 0⤊ 1⤋
8a+a-7-15a
8a+a-15a-7
a(8+1-15)-7
-6a-7
2006-10-08 10:06:19 · answer #6 · answered by yupchagee 7 · 0⤊ 0⤋
ok. You started with 2c-8(9c-5) constantly do the stuff interior the parentheses first in case you may, yet to that end, there is no longer something you're able to do interior the parens next multiply the 8 circumstances each and every component interior the parens to get 2c-72c+40 then you quite can integrate the 2c and the damaging 72c to get -70c+40 i think of it truly is all you're able to do
2016-10-15 12:57:46 · answer #7 · answered by ? 4 · 0⤊ 0⤋
-6a-7
2006-10-04 13:48:23 · answer #8 · answered by OhSoLovely 4 · 0⤊ 1⤋
-6a-7
2006-10-04 13:39:14 · answer #9 · answered by Shortsteps 1 · 1⤊ 1⤋
-4a-7
2006-10-04 13:34:28 · answer #10 · answered by yankeeskid247 2 · 0⤊ 1⤋