1. 5(x + 7) = 80
i need the working out
i need to solve the equationn.
2007-03-20 08:11:53 · 10 answers · asked by Anonymous in Education & Reference ➔ Homework Help
OPTION 1
1: 5(x + 7) = 80
2: x+7=80/5 Divide 5 from both sides
x+7=16
3: x=16-7 subtract 7 from both sides
x=9
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OPTION 2
or Factor in and then solve
1: 5(x + 7) = 80
2: 5x+35=80 Factor (5*x)+(5*7)=80
3: 5x=80-35
5x=45
4: x=45/5
x=9
2007-03-20 09:02:51 · answer #1 · answered by Smokey. 6 · 0⤊ 0⤋
first ditribute the 5 which means multiply 5 by everything in the brackets
so
5x + 35 = 80
then solve for x
so you minus 35 from both sides and you get
5X = 45
then you divide both sides by 5
x = 9
2007-03-20 08:17:50 · answer #2 · answered by zmxn6666 2 · 0⤊ 0⤋
distribute the 5
5x + 35 = 80
5x = 45
x = 9
2007-03-20 08:15:49 · answer #3 · answered by crzywriter 5 · 0⤊ 0⤋
5 (x+7)=80
5 (9+7)=80
5(16)=80
5x16=80
x=9
Hope helped you!
2007-03-20 08:43:22 · answer #4 · answered by basketballplaya3194 2 · 0⤊ 0⤋
open brackets so its
5x+35=80
5x=80-35
5x=45
x=45/5
x=9
2007-03-20 08:20:00 · answer #5 · answered by Anonymous · 0⤊ 0⤋
5x+35=80
5x=80-35
x=45/5
x=9
2007-03-20 08:15:20 · answer #6 · answered by Rose 3 · 1⤊ 0⤋
well you have to distribute the 5 and solve the equation
2007-03-20 08:16:12 · answer #7 · answered by Carolink15 2 · 0⤊ 0⤋
3.0
2007-03-20 08:24:26 · answer #8 · answered by Jennifer Is My favorite avatar!! 1 · 0⤊ 0⤋
1.5x+10.5-80=0
1.5x-69.5=0
1.5x=69.5
x=69.5/1.5
x=46.3333
2007-03-20 08:19:18 · answer #9 · answered by MJ 2 · 0⤊ 0⤋
lol
2007-03-20 08:14:45 · answer #10 · answered by Anonymous · 0⤊ 1⤋