B. Solve. x/3=8
C. Solve. 2/5x-6=12
D. Solve. 6(2-x)=4x
2007-05-06 17:42:30 · 11 answers · asked by Chris C 1 in Education & Reference ➔ Homework Help
Remember that the variables cancel out.
8x - 11 = 2x + 1 is really
6x - 11 = 1 because I was able to cancel out 2x
To solve this then becomes easy. Reverse the equation.
1+ 11 = 6x
so 6x = 12
12 / 6 = 2
so x = 2
That is the pattern you use. It takes about 30 seconds per problem like that so you have about 1.5 minutes left to finish your homework.
2007-05-06 17:51:16 · answer #1 · answered by elcid812 4 · 1⤊ 0⤋
A.8x-11=2x+1
8x-2x=11+1
6x=12
x=2
B.x/3=8
x=3*8
x=24
C.2/5x-6=12
2/5x=12+6
2/5x=18
2x =18*5
x =18*5/2
x =9*5
x =45
D.6(2-x)=4x
12-6x=4x
12=4x+6x
10x =12
x =12/10
x =6/5
2007-05-06 18:07:35 · answer #2 · answered by ShanDian786 2 · 0⤊ 0⤋
A) 8x-11=2x+1 original equation
8x-2x= 11+1 put all like terms together on one side x with x and number with number
6x= 12 add like terms
x=2 divide each side by 6 to isolate the x, the answer is 2
B) x/3=8 original equation
x=24 multiply each side by 3 to cancel the denominator, x=24
C) 2/5x-6=12 original equation
2/5x= 18 add 6 to each side
2=90x multiply each side by 5x to cancel denominator
2/90=x divide each side by 90
1/45 =x simplify answer
D) 6(2-x) =4x orignal equation
12-6x=4x distribute the 6
12=10x add 6x to each side
12/10=x divide each side by 10
6/5=x simplify answer
2007-05-06 17:57:14 · answer #3 · answered by knox 3 · 0⤊ 0⤋
to remedy those equations you need to do 2 issues: a) Get the X's on one edge of the equation all by potential of itself b) Get the x right down to a ingredient the place that is ingredient (what that is expanded by potential of is a million) And to try this, purely save this in innovations... regardless of you do to a minimum of one side you need to do to the different to maintain the fact real (equivalent). 8x - 11 = 2x+a million 8x - 11 + 11= 2x + a million + 11 upload 11 to the two facets to get it from the left side to the main spectacular side 8x = 2x+12 8x-2x = 2x +12 - 2x Subtract 2x from the two facets to get it from the main spectacular to the left 6x = 12 6x/6 = 12/6 Divide the two facets by potential of 6 to get the x by potential of itself x = 2
2016-10-14 23:33:59 · answer #4 · answered by ? 4 · 0⤊ 0⤋
A.8x-11=2x+1
6x=12
x=2
B. x/3=8
x=3X8
x=24
C. 2/5x-6=12
2-30x/5x=12
2-30x=60x
2=90x
x=1/45
D. 12-6x=4x
12=10x
x=1.2
2007-05-06 17:57:04 · answer #5 · answered by me 2 · 0⤊ 0⤋
A: 8x-11-2x-1=0
6x-12=0
6x=12
x=2
2007-05-06 17:49:05 · answer #6 · answered by Eighty Eight 3 · 0⤊ 0⤋
A. 6x = 12, x = 2
B. x = 24
C. 2/5 x = 18, 2 x = 90, x= 45
D. 12-6x = 4x, 12 = 10x, 12/10 = x, 6/5 = x
2007-05-06 17:57:23 · answer #7 · answered by Ray 3 · 0⤊ 0⤋
8x-11+11=2x+1+11
8x-2x=2x-2x+12
6x=12
x=2
x/3=8
(3)x/3=8(3)
x=24
2/5x-6=12
2/5x-6+6=12+6
2/5x=18
2/5x(5/2)=18/1*5/2
x=90/2=45
6(2-x)=4x
12-6x=4x
12-6x+6x=4x+6x
12=10x
12/10=x 6/5=x
2007-05-06 18:51:41 · answer #8 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
A. x = 2
B. x = 24
C. x = 45
D. x = 6/5
there you go
2007-05-06 17:52:50 · answer #9 · answered by Anonymous · 0⤊ 0⤋
A. x=2
B.x=24
C.x=9
D. You must do some of your homework!
2007-05-06 17:50:35 · answer #10 · answered by Anonymous · 0⤊ 0⤋