If you ask a similar question in the future, please write out the word plus if that is what you meant when you typed in the space between the X and the 11. Assuming you mean 5X +11 minus 2X equals seven, then 3X equals 18, so x= six
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Factor the original equation to get (x-7)(x+2)=0, so x=7 or x=-2
It is a mathematical equation, usually written like this: 5x - 7 + 2x = 3x - 2 + 4x
The answer is 3. :p
7+8x-5 = 8x+7-5x Subtract 7 from both sides: 8x-5 = 8x-5x Subtract 8x from both sides: -5 = -5x Divide both sides by -5: x = 1 So the equation implies x = 1