2X + 9 = 10
subtract 9 from each side
2X + 9 - 9 = 10 - 9
2X = 1
divide both sides integers by 2
(2/2)X = 1/2
X = 1/2
-----------------check in original equation
2(1/2) + 9 = 10
2/2 + 9 = 10
1 + 9 = 10
10 = 10
--------------checks [ 2(1/2) also cancels to just 1 ]
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3.5
If 4x - 2x + 4 = 10, the solution is 2x + 4 = 10 and x = 3.
2x+10=9+11-3x2x+10=20-3x5x+10=205x=10x=2
2 (x) + 10 14 x must equal 7
X equals 2 :)