3X + 7 - X + 2 = 2X + 9
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the answer is 3 and here's why 3x-2=7 add 2 to both sides of the equation (3x-2)+2=7+2 simplify 3x=9 divide both sides by 3 3x/3=9/3 simplify x=3
Assuming simplify = factor...x3 - 3x + 2 = (x-1)(x2+x-2)
Collect like terms together: 3x - 7 - 4 - x = (3x - x) + (-7 - 4) = (3 - 1)x + (-11) = 2x - 11
3x^2 + x + 2x^2 = 5x^2 + x
-3x + 2 = -7 - 2 -2 -3x = -9 so x = 3