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Combine like terms on the left hand side 4 and -6 to give
Combine like terms on the right hand side 3x and -x to give
Add 2 to both sides to get
Subtract 2x from both sides to get
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Now we check: On the left hand side we have 4+3x-6 and when x is 4 this becomes 4+3*4-6= 4+12-6 = 10. On the right hand side we have 3x+2-x and when x is 4 this becomes 3*4+2-4=12+2-4=10, so we get 10 on both sides which means the solution x=4 is correct.