<PRE><B>Question 23928</B>
Subtract 7x from each side.

We now have

7x -7x +3 = 15x - 7x + 9

3 = 8x+9

Subtract 9 from each side.

3-9 = 8x+9 -9
 -6 = 8x

Divide by 8 and simplify each side.

{8x/8} = {-6/8}

x = -3/4

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Back check:
The value for x you get must satisfy the original equation
7x+3=15x+9

(-21/4)+ 3 = (-45/4) + 9

Work this out and both sides are equal to -9/4


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