it means that x should equal 10.
x + x = 20.
x = 10
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11 plus 5-10 plus 20-9 plus 14-10 is equal to 21
I am having difficulty understanding your question. 12 + 20 = 10 is obviously false (12 + 20 = 32).If 4x + 14 = 2x + 30, then x must equal 8.
10
2x+10=9+11-3x2x+10=20-3x5x+10=205x=10x=2
10 plus 20-2 - 11 plus 3 is equal to 20.