Question

Can anyone help me? What is the solution to the equation 3(2x+4) over 2 -9=3x?

Answer 1

\[\frac{3(2x+4)}{2} -9 = 3x\]
is that correct?

Answer 2

yup :)

Answer 3

well first thing i notice is that 2x+4 has a common factor of 2
2x +4 = 2(x+2)
the outside 2 will then cancel with 2 in denominator
leaving
\[3(x+2) -9 = 3x\]

Answer 4

so that's the answer?

Answer 5

it's no solution?

Answer 6

um no i was just trying to help you simplify it
you have to try to solve for x

Answer 7

oh okay :D x=0 right?

Answer 8

nope...try plugging in 0 for x, you wont get same thing on both sides

Answer 9

3(x+2) = 3x + 6
combine like terms

Answer 10

ohh so x=6?

Answer 11

you should notice that there is a 3x on both sides, this means that the x will cancel out if you subtract 3x from both sides
leaving
-3 = 0
this obviously is false so there is no solution

Answer 12

Okay thanks!!!

Answer 13

if you think x=6, you don;t need to ask if it is right.
just plug in 6 for x and test to see if you get same thing on both sides

Answer 14

you can always plug in a number for x to see if its a solution...this way you can know whether your answer is right or not