The equation is 2(x) +3= 9. X would equal 3. The equation would now look like this, 2x3+3=9.
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2x+a=p 2x=p-a x=.5p-.5a
It is not possible to solve a single linear equation in two variables.
many solutions
To solve for x, set up the equation: 2x +2x = 40 (then simplify) 4x = 40 (then divide both sides of the equation by 4) x = 10 (this is the answer)
X equals 2 :)