3x
__ = 2x + 7 ( 3x over 2 =2x +7)
2
Please show me how you work it out please....
2007-05-21 07:14:43 · 7 answers · asked by Anonymous in Education & Reference ➔ Homework Help
3x/2=2x+7
multiply both sides by 2
3x = 4x +14
subtract both sides by 4x
-x=14
multiply both sides by -1
x= -14
2007-05-21 07:19:33 · answer #1 · answered by borscht 6 · 0⤊ 0⤋
fraction = fraction is a direct proportion and can be solved by cross multiplying.
3x/2 = (2x + 7)/1
2(2x + 7) = 3x(1)
4x + 14 = 3x
x = -14
2007-05-21 14:19:25 · answer #2 · answered by kamcrash 6 · 0⤊ 0⤋
Multiply both sides by 2 to get rid of the fraction first, then solve as usual:
3x/2 = 2x + 7
3x = 4x + 14
x = -14
2007-05-21 14:18:47 · answer #3 · answered by igorotboy 7 · 0⤊ 1⤋
multiply 2 by (2x+7):
3x=4x+14
subtract 4x from 3x:
-1x=14
divide 14 by -1:
x=-14
2007-05-21 14:18:57 · answer #4 · answered by abe_cooldude 1 · 1⤊ 0⤋
1. multiply 2 throughout both sides of equations to get rid of denominator 2 on the left hand side.
3x= 2(2x+7)
3x=4x+14
2. shift all the x terms to one side of the equation.( remember to change signs when you shift it over the = sign e.g. a + sign is changed to a - sign)
3x-4x=14
-x=14
3. hence, divide -1 from both sides to get rid of -ve sign on x term.
x= -14 ANS!!
2007-05-21 14:26:34 · answer #5 · answered by Anonymous · 0⤊ 0⤋
multiply both side by 2--- 3x=(2x+7)2
distribute--- 3x=4x+14
subtract 4x from both sides--- -x=14
multiply by -1 (to get rid of -x)--- x= -14
2007-05-21 14:21:23 · answer #6 · answered by KitKat 3 · 0⤊ 0⤋
3x/2=2x+7
3x=2(2x+7)
3x=4x+14
3x-4x=14
-x=14
x= -14
2007-05-21 14:22:58 · answer #7 · answered by Zara N 2 · 0⤊ 0⤋