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If what you are trying to say is 4x-7=3x then I can help. This is just a simple one step equation.
First you want to get the variables on the same side, so subtract 4x from both sides.
You get -7=-x. Because you have double negatives, you can switch it to 7=x.
WRONG ITS -7, you take a -3x on both side and get 1x=-7
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What is the value of x if -3x 2-7?
You need an equal sign to solve for x.
How can you solve 3x-4y16 letting y equals -1?
That's not an equation you can solve, since it doesn't have an equal si Assuming you mean: 3x - 4y = 16 For a start, you should replace y with -1. Then solve the resulting equation: 3x - 4(-1) = 16 for x.
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