Equation: 3( 1+x)=x+15
First you need to distribute the left side of the equation.
3+3x=x+15
Now you need to cancel out like terms. You can subtract 1x from both sides first and that leaves you with 3+2x=15. Then you will need the subtract 3 from both sides and that gives you
2x=12. Now you need to divide 2 from both sides and that gives you the final answer of x=6
