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Q: What is the answer to 10x plus 3 equals 15?

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10x + 3 = 15 10x = 15 - 3 10x = 12 x = 1.2

30 + 5x = 15 + 10x 30 = 15 + 5x 15 = 5x x = 3

If: 10x+7 = 5x+22 Then: 10x-5x = 22-7 And: 5x = 15 So: x = 3

-10x+3 = -x+12 -10x+x = 12-3 -9x = 9 x = -1

x=3

x2 + 10x + 21 = (x + 3)(x + 7)

2x-3 = 21+10x 2x-10x = 21+3 -8x = 24 x = -3

10x+7=(-3) 10x=(-10) x=(-1)ans

10x + 17 = 4x - 16x = -18x = -3

x=-3

7x = 3 x = 3/7

7x2-10x+3=0 (7x-3)(x-1)=0

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