i dun kno how to slove ths in proper format
ths is grade 10 math sloveing expressions
2007-02-05 09:22:43 · 11 answers · asked by mc.bubblez 1 in Science & Mathematics ➔ Mathematics
Use distributive property:
5x+2x+14
7x+14
2007-02-05 09:26:18 · answer #1 · answered by Anonymous · 4⤊ 0⤋
I'm assuming yo mean 5x+2(x+7) = 0 otherwise x = all real numbers so
5x+2(x+7) = 0 distribute the 2
5x +2x + 14 = 0 combine like terms
7x + 14 = 0 subtract 14 from both sides
7x = -14 divide by 7
x = -2
Check
5(-2)+2((-2)+7) = 0
-10+(-4)+14=0
-14+14=0
0 = 0
check
if not then
5x+2(x+7) = ? distribute the 2
5x +2x + 14 = ? combine like terms
7x + 14 = 0 factor out the 7
7(x + 2) = ?
2007-02-05 17:30:59 · answer #2 · answered by Richard 7 · 1⤊ 0⤋
x = -2
2007-02-07 19:29:09 · answer #3 · answered by leaf 1 · 0⤊ 0⤋
5x + 2 ( x + 7 ) =
First is to solve the 2 ( x + 7 ) by useing the distributive property
2xX & 2x7
2x+14
bring everything down
5x + 2x + 14 =
add the 5x + 2x = 7x
Bring everything down
7x + 14 =
divide both by 7
7x/7 = x
14/7 =2
x = 2
2007-02-05 18:23:36 · answer #4 · answered by njpoolgirl 2 · 1⤊ 0⤋
To solve this you can only get it into the simplest format.
5x + 2(x + 7)=?
So you have to take the 2 to both the x and 7 to get
2x and 14
since 2x and 5x are alike you can add them to get
7x
so it equals 7x + 14
hope this helps
2007-02-05 17:28:26 · answer #5 · answered by Domino 1 · 1⤊ 0⤋
5x + 2(x+7)=
5x + 2x +14
7x+14=
if it = 0 then the rest is
7x=(-14) (divide by 7)
x= (-2)
2007-02-05 17:41:29 · answer #6 · answered by Sparky 4 · 1⤊ 0⤋
5x+2(x+7) THIS IS EASY
GET RID OF THE (X+7) BY MULTIPLYING IT WITH THE 2
5X+2X+14
ADD LIKE VALUES TOGETHER
7X+14
SUBTRACT THE 14 TO GET 7X=-14
DIVIDE IT OUT TO FIND X
X=-2
PUT IT IN TO SEE IF YOU ARE RIGHT
-10 +2(-2+7)
-10 +2(5)
-10 + 10
2007-02-05 17:33:31 · answer #7 · answered by Jen G 3 · 1⤊ 0⤋
first let's distribute the 2 in 2(x+7):
5x + (2*x + 2*7)
5x + (2x + 14)
Now simple combine like terms:
7x + 14
We can leave it like this, or factor out a common term (7):
7(x+2)
Hope this helps! :)
2007-02-05 17:26:54 · answer #8 · answered by disposable_hero_too 6 · 1⤊ 0⤋
5x + 2x + 14 = 0
7x + 14 = 0
7x = -14
x= -2
2007-02-05 17:44:50 · answer #9 · answered by Anonymous · 1⤊ 0⤋
5x+2x+14=0
7x+14=0
7x+14-14=0-14
7x=-14
x=-2
2007-02-05 17:50:19 · answer #10 · answered by Dave aka Spider Monkey 7 · 1⤊ 0⤋