Question 679718
Now just do some basic algebra
:
3x - 2 = 2x + 7
add 2 to each side
3x = 2x + 7 + 2
3x = 2x + 9
subtract 2x from both sides
3x - 2x = 9
x = 9
:
Check this; substitute 9 for x in the original equation, see that equality reigns!