Math is my least favorite subject.This is so easy.I know how to do this but we just started doing thsi kind of math and I forgot my notes.So can u plz help.Explain i just don't want the answer.I will give you 10points.
Instructions:Simplify
13. 4(x + 3)-5
14. 6(7 + x)+ 5x
15. 3(5 + 3x)- 4x
2006-09-28 14:49:23 · 9 answers · asked by ms.jazzi 2 in Education & Reference ➔ Homework Help
i want the answer but not just the answer explain how u got it
2006-09-28 14:53:02 · update #1
Distribute then reduce
13. 4x +12-5
4x+7
14. 42 +6x+5x
42 + 11x
15. 15 + 9x - 4x
15 + 5x
5(3 + x)
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2006-09-28 14:51:28 · answer #1 · answered by odu83 7 · 3⤊ 0⤋
First off, if you ever need additional math help, feel free to contact me through Yahoo Answers.
What you need to do is distribute the numbers in front, ie multiply times the numbers in parantheses. Then you combine the like terms. Here's the work:
13. 4(x+3)-5
4x+12-5 - multiply four times x and three
4x+7 - combine the 12 and -5 to 7.
14. 6(7+x)+5x
42+65+5x - multiply six times seven and x
107+5x - combine the 42 and 65 to 107
5x+107 - this step is not important, but math teachers tend to prefer having the variable term (5x) in front of the number (107)
15. 3(5+3x)-4x
15+9x-4x - multiply three times five and 3x
15+5x - combine the 9x and -4x
5x+15 - again, unimportant step of rearranging to put the variable term in front.
Hope this helps you. Feel free to ask me for more help.
2006-09-28 21:59:57 · answer #2 · answered by beethovens_sixth 3 · 1⤊ 0⤋
you distribute the first number to the equation in the parentheses. so for like 13. you would do 4 times 1 which would give you 4x and then you would also distribute the 4 to the three making that 12. so now the equation reads 4x + 12 - 5.
just do the same for the rest of them.
2006-09-28 21:53:48 · answer #3 · answered by lovescountry08 1 · 2⤊ 1⤋
4x+12-5
4x+7
4x=-7
x=-7/4
42+6x+5x
42+11x
11x=-42
x=-42/11
15+9x-4x
15+5x
5x=-15
x=-15/5
x=-3
2006-09-28 22:15:00 · answer #4 · answered by moosa 5 · 0⤊ 1⤋
multiply 4 with x and also with 3 then subtract 5 from 4*3 i.e.12
do the same for all the others
2006-09-28 21:59:22 · answer #5 · answered by SdM 4 · 0⤊ 1⤋
I'll show the first, then you can probably do the rest in a flash. You need to use the distributive property to get that four thru.
4x+12-5
4x-7 this is as simplified as it gets
2006-09-28 21:52:44 · answer #6 · answered by Anonymous · 2⤊ 1⤋
distribute them
multyiply 4 by x and 3
4x+12-5
now simplify
4x+7
2006-09-28 21:52:41 · answer #7 · answered by yellowskinnedguy 3 · 3⤊ 0⤋
okay here ya go....... trust me I have an A+ in Advanced math (Algerbra 1A)
13. 4x(12+-5)
14.42(6x)
15.15(3x-4x)
15(-1x)
2006-09-28 22:03:21 · answer #8 · answered by Anonymous · 0⤊ 1⤋
ooh im doing this in class!
2006-09-28 21:57:33 · answer #9 · answered by Aga 3 · 0⤊ 2⤋