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Q: What is 7x - 4020 plus 3x?

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-46 = 3x + 7x

3+3x+7x=13 3x+7x=10 10x=10 x=1

3x+7x+3+y= 10x+3+y

8+7x = 20+3x 7x-3x = 20-8 4x = 12 x = 3

-4x

7x - 9 = 3x + 5 7x - 3x - 9 = 5 7x - 3x = 5 + 9 4x = 14 x = 14/4

simplify it, 7x-12=x+2+2x-3x 7x=2+12+3x-3x 7x=14 x=2

7x + 16 = 3x + 4 4x = -12 x = -3

3x + 4x = 7x

3x - 2y + 7x + 4y = 3x + 7x - 2y +4y = (3+7)x + (-2+4)y = 10x + 2y

56xy + 2y + 3x

3x + (-2 + 4x) = -2 + 7x

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