i am normally really good at math but this one is harder for some reson! Yet i do harder stuff all the time. plaese help!
2007-01-17 07:04:32 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Take your time and make sure you do Parenthesis first and what's attached to them. You're practicing the Distributive Property here.
3x - 2(5 - x) = -3(x - 10) + 3x
Let's distribute to get rid of the parenthesis on both sides.
-2(5 - x) = -2*5 + -2*-x = -10 + 2x (Keep in mind negative times negative is positive)
So on the left side of the equal sign we have:
3x - 10 + 2x
On the right side:
-3(x - 10) = -3 * x + -3*-10 = -3x + 30
So on the right side of the equal sign we have
-3x + 30 + 3x
So our new equation looks like:
3x - 10 + 2x = -3x + 30 + 3x
Now let's combine like terms on both sides of the equal sign.
3x + 2x = 5x and -3x + 3x = 0x
So...
5x - 10 = 30
Let's add 10 to both sides:
5x = 40
Divide both sides by 5 to get x alone:
x = 8
Hope that helped...Good Luck in your Math.
2007-01-17 07:13:09 · answer #1 · answered by Chaney34 5 · 0⤊ 0⤋
problem a million x( 2x + a million ) + ( 4 - 3x ) = 10 distribute the x ( 2x^2 + x ) + ( 4 - 3x ) =10 combine the x's with an same ability 2x^2 - 2x + 4 = 10 placed the ten on the different fringe of the equation 2x^2 - 2x - 6 = 0 divide equation through 2 x^2 - x - 3 = 0 ingredient x (x - 2)(x + a million) = 0 remedy for x = 2 and x = -a million do the different complications like this
2016-10-17 01:56:39 · answer #2 · answered by sicilia 4 · 0⤊ 0⤋
Making the operations
3x-10+2x = -3x+30 +3x ===> 5x=40 x=8
2007-01-17 07:16:38 · answer #3 · answered by santmann2002 7 · 0⤊ 0⤋
3x -2(5 - x) = -3(x - 10) + 3x
3x - 10 + 2x = -3x + 30 + 3x
5x -10 = 30
5x = 40
x=8
2007-01-17 07:14:51 · answer #4 · answered by Jen G 3 · 0⤊ 0⤋
8
2007-01-17 07:12:46 · answer #5 · answered by ~Zaiyonna's Mommy~ 3 · 0⤊ 0⤋
3x -2(5 - x) = -3(x - 10) + 3x
3x - 10 + 2x = -3x + 30 + 3x
5x -10 = 30
5x = 40
x=8
2007-01-17 07:11:39 · answer #6 · answered by cosmowinterbottom 2 · 0⤊ 0⤋
3x - 2(5 - x) = -3(x - 10) + 3x
3x - 10 + 2x = -3x + 30 + 3x
5x - 10 = 30
5x = 40
x = 8
2007-01-17 07:10:55 · answer #7 · answered by jonmm 4 · 0⤊ 0⤋
x=8.
Details:
The equation reduces to:
3x - 10 + 2x = -3x + 30 + 3x
5x - 10 = 30
5x = 40
x = 8
2007-01-17 07:10:39 · answer #8 · answered by balak 1 · 0⤊ 0⤋
x = 8
3x - 2 * (5 - x) = -3 * (x - 10) + 3x
Distribute the 2 and -3.
3x - 10 + 2x = -3x + 30 + 3x
Combine like terms.
5x - 10 = 30
Isolate x.
5x = 40
x = 8
2007-01-17 07:23:21 · answer #9 · answered by C D 3 · 0⤊ 0⤋
First multiply everything out..this gives
3X-10+2X = -3X+30+3X
Add like terms...this gives.
5X-10 = 30
.......
5X = 40
Divide both sides by 5 and
X=8
2007-01-17 07:12:17 · answer #10 · answered by tnyae5 2 · 0⤊ 0⤋