2x = 4x - 70; it is easiest to first get rid of a 2 factor, so x = 2x - 35. subtract 2x from both sides, getting -x = -35. multiply both sides by -1, getting x = 35. Then, to check, plug the numbers back in. 2(35) = 4(35) - 70; 70 = 70.
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2x+a=p 2x=p-a x=.5p-.5a
x = -8
X should be zeroas:X + 5 = 2X + 5so, 2X - X = 0 or X = 0
2x - 8 = 10 2x = 10 + 8 2x = 18 x = 18 / 2 x = 9
-9-2x+x = -13 -2x+x = -13+9 -x = -4 x = 4