Linear Equations in One Variable

SAT Math· difficulty 3/5

If 25(x10)=13x+2\frac{2}{5}(x - 10) = \frac{1}{3}x + 2, what is the value of xx?

  • A

    60

  • B

    60-60

  • C

    30

  • D

    90

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Explanation

Multiply by 15: 6(x10)=5x+306(x-10) = 5x + 30. So 6x60=5x+306x - 60 = 5x + 30, giving x=90x = 90.

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