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can someone help me with my, easy math homework??? 10 points, please help?
i dont know how to do problem types like this:
4(2n + 3) - 3(n - 1) = 0
and
(2y - 3) - (y + 6) = 63
please help me i want to know how to do these so i can finish my homework =[
thanks in advance
8 Answers
- 1 decade agoFavorite Answer
a. 4(2n + 3) - 3(n - 1) = 0
8n + 12 -3n + 3 = 0
5n = -15
n = -3
b. (2y - 3) - (y + 6) = 63
2y - 3 - y - 6 = 63
y = 63 +6 +3
y = 72
- 1 decade ago
a) 4(2n+3)-3(n-1) = 0
8n+12-3n+3 = 0
8n-3n+12+3 = 0
5n+15 = 0
5n = 0-15
5n = -15
n = -15/5
n = -3
b) (2y-3)-(y+6) = 63
2y-3-y-6 = 63
2y-y-3-6 = 63
y-9 = 63
y = 63+9
y = 72
- 1 decade ago
a. 4(2n + 3) - 3(n - 1) = 0
8n +12 -3n +3 = 0
5n +15 = 0
5n = -15
n = -3
b. (2y - 3) - (y + 6) = 63
2y - 3 - y - 6 = 63
y = 63 +6 +3
y = 72
- jacory harrisLv 41 decade ago
4(2n + 3) - 3(n - 1) = 0 (distribute outside of the grouping symbol)
8n + 12 - 3n + 3 = 0
8n - 5n + 12 + 3 = 0
3n + 6 = 0
-15 = -15 (subtract 6 to isolate the 3n)
3n = -15 (divide by 30)
n = -3
------------------------------------------------------
(2y - 3) - (y + 6) = 63 (distribute the - sign to the one symbol)
2y - 3 - y - 6 = 63
2y - y - 3 - 6 = 63
y - 9 = 63 (add 9)
+9 = +9
y = 72
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- 1 decade ago
4(2n+3)-3(n-1)=0
8n+12-3n+3=0
5n+15=0
5n=-15
n= - 5
(2y - 3) - (y + 6) = 63
2y-3-y-6=63
3y-9=63
3y=72
y=24
