2x + 30 = 4x + 10
Subtracting 2x from each side,
30 = 2x + 10
Subtracting 10 from both sides
20 = 2x
Dividing both sides by 2
10 = x
x = 10
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2x - 10 =30 2x -10 = 30 +10 +10 2x = 40 /2 /2 x = 20
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.
30+12x = 6(5+2x)
If: 3x+20 = 2x-10 Then: x = -30
30