You can put this solution on YOUR website! Multiply both sides by 7, then subtract 14 from both sides, finally multiply EVERYTHING on the left and right side of the equation by -1. This will give you the answer.
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It is VERY important that you ask questions about this type of stuff now so that you understand this stuff. You can either learn it now and make things easier throughout high school, or you will struggle until you do learn it. The good news is that I can help you learn it. Contact me at justin.sheppard.tech@hotmail.com for help.
Justin